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Mathematics Quiz - Class 9 Mathematics Easy Level 40 Quiz

Question 1/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि पौधे की ऊंचाई (H(d)=15+3d) सेमी है, तो यह किस प्रकार का परिवर्तन है?

If the height of a plant is (H(d)=15+3d) cm, what type of change is it?

Explanation opens after your attempt

Correct Answer

A. रेखीय वृद्धिLinear growth

Step 1

Concept

The coefficient of (d) is (3), which is positive. A positive rate shows linear growth.

Step 2

Why this answer is correct

The correct answer is A. रेखीय वृद्धि / Linear growth. The coefficient of (d) is (3), which is positive. A positive rate shows linear growth.

Step 3

Exam Tip

(d) का गुणांक (3) धनात्मक है। धनात्मक दर रेखीय वृद्धि दिखाती है।

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Question 2/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि टंकी में पानी (W(t)=90-5t) लीटर है, तो यह किस प्रकार का परिवर्तन है?

If water in a tank is (W(t)=90-5t) litres, what type of change is it?

Explanation opens after your attempt

Correct Answer

C. रेखीय क्षयLinear decay

Step 1

Concept

The coefficient of (t) is (-5), which is negative. A negative rate shows linear decay.

Step 2

Why this answer is correct

The correct answer is C. रेखीय क्षय / Linear decay. The coefficient of (t) is (-5), which is negative. A negative rate shows linear decay.

Step 3

Exam Tip

(t) का गुणांक (-5) ऋणात्मक है। ऋणात्मक दर रेखीय क्षय बताती है।

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Question 3/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

रेखीय नियम (A(n)=22+4n) में आरंभिक मान क्या है?

In the linear rule (A(n)=22+4n), what is the initial value?

Explanation opens after your attempt

Correct Answer

B. (22)

Step 1

Concept

The initial value is found by putting (n=0). (A(0)=22).

Step 2

Why this answer is correct

The correct answer is B. (22). The initial value is found by putting (n=0). (A(0)=22).

Step 3

Exam Tip

आरंभिक मान (n=0) रखने पर मिलता है। (A(0)=22) है।

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Question 4/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

रेखीय नियम (B(t)=130-8t) में प्रति इकाई परिवर्तन दर क्या है?

In the linear rule (B(t)=130-8t), what is the rate of change per unit?

Explanation opens after your attempt

Correct Answer

C. (-8)

Step 1

Concept

The rate equals the coefficient of (t). Here the rate is (-8).

Step 2

Why this answer is correct

The correct answer is C. (-8). The rate equals the coefficient of (t). Here the rate is (-8).

Step 3

Exam Tip

दर (t) के गुणांक के बराबर होती है। यहां दर (-8) है।

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Question 5/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (P(x)=12+7x), तो (x=4) पर (P(x)) का मान क्या है?

If (P(x)=12+7x), what is the value of (P(x)) at (x=4)?

Explanation opens after your attempt

Correct Answer

C. (40)

Step 1

Concept

(P(4)=12+7(4)=40). Substitute the given number for (x) to find the value.

Step 2

Why this answer is correct

The correct answer is C. (40). (P(4)=12+7(4)=40). Substitute the given number for (x) to find the value.

Step 3

Exam Tip

(P(4)=12+7(4)=40) है। मान निकालने के लिए (x) की जगह दी गई संख्या रखें।

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Question 6/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (R(h)=84-6h), तो (h=7) पर (R(h)) का मान क्या है?

If (R(h)=84-6h), what is the value of (R(h)) at (h=7)?

Explanation opens after your attempt

Correct Answer

A. (42)

Step 1

Concept

(R(7)=84-6(7)=42). In decay, multiply first and then subtract.

Step 2

Why this answer is correct

The correct answer is A. (42). (R(7)=84-6(7)=42). In decay, multiply first and then subtract.

Step 3

Exam Tip

(R(7)=84-6(7)=42) है। क्षय में पहले गुणा करें फिर घटाएं।

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Question 7/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

किस नियम में समान वृद्धि (6) प्रति चरण है?

Which rule has equal growth of (6) per step?

Explanation opens after your attempt

Correct Answer

B. (y=18+6x)

Step 1

Concept

The coefficient of (x) is (6), which is positive. So it shows an increase of (6) each step.

Step 2

Why this answer is correct

The correct answer is B. (y=18+6x). The coefficient of (x) is (6), which is positive. So it shows an increase of (6) each step.

Step 3

Exam Tip

(x) का गुणांक (6) धनात्मक है। इसलिए यह हर चरण (6) की वृद्धि दिखाता है।

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Question 8/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

किस नियम में समान कमी (4) प्रति चरण है?

Which rule has equal decrease of (4) per step?

Explanation opens after your attempt

Correct Answer

C. (y=60-4x)

Step 1

Concept

The coefficient of (x) is (-4). It means a decrease of (4) at each step.

Step 2

Why this answer is correct

The correct answer is C. (y=60-4x). The coefficient of (x) is (-4). It means a decrease of (4) at each step.

Step 3

Exam Tip

(x) का गुणांक (-4) है। इसका अर्थ हर चरण में (4) की कमी है।

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Question 9/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (C(d)=17+2d), तो (d) में (1) बढ़ने पर (C(d)) कितना बढ़ेगा?

If (C(d)=17+2d), by how much will (C(d)) increase when (d) increases by (1)?

Explanation opens after your attempt

Correct Answer

B. (2)

Step 1

Concept

In linear growth, the increase per (1) step equals the coefficient. Here the coefficient is (2).

Step 2

Why this answer is correct

The correct answer is B. (2). In linear growth, the increase per (1) step equals the coefficient. Here the coefficient is (2).

Step 3

Exam Tip

रेखीय वृद्धि में प्रति (1) चरण वृद्धि गुणांक के बराबर होती है। यहां गुणांक (2) है।

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Question 10/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (D(t)=72-9t), तो (t) में (1) बढ़ने पर (D(t)) कितना घटेगा?

If (D(t)=72-9t), by how much will (D(t)) decrease when (t) increases by (1)?

Explanation opens after your attempt

Correct Answer

A. (9)

Step 1

Concept

The coefficient is (-9), so the value decreases by (9) each step. The amount of decrease is (9) in positive form.

Step 2

Why this answer is correct

The correct answer is A. (9). The coefficient is (-9), so the value decreases by (9) each step. The amount of decrease is (9) in positive form.

Step 3

Exam Tip

गुणांक (-9) है इसलिए मान हर चरण में (9) घटता है। घटने की मात्रा धनात्मक रूप में (9) है।

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Question 11/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

एक विद्यार्थी के हल किए प्रश्न (Q(w)=30+8w) से बढ़ते हैं। (w=5) पर प्रश्न कितने होंगे?

A student's solved questions increase as (Q(w)=30+8w). How many questions will there be at (w=5)?

Explanation opens after your attempt

Correct Answer

C. (70)

Step 1

Concept

(Q(5)=30+8(5)=70). Substitute the given value of (w) directly.

Step 2

Why this answer is correct

The correct answer is C. (70). (Q(5)=30+8(5)=70). Substitute the given value of (w) directly.

Step 3

Exam Tip

(Q(5)=30+8(5)=70) है। दिए गए (w) का मान सीधे रखें।

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Question 12/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

एक बोरी में चावल (S(d)=64-3d) किग्रा बचता है। (d=8) पर चावल कितना बचेगा?

Rice left in a sack is (S(d)=64-3d) kg. How much rice will remain at (d=8)?

Explanation opens after your attempt

Correct Answer

A. (40) किग्रा(40) kg

Step 1

Concept

(S(8)=64-3(8)=40). In linear decay, an equal amount decreases each time.

Step 2

Why this answer is correct

The correct answer is A. (40) किग्रा / (40) kg. (S(8)=64-3(8)=40). In linear decay, an equal amount decreases each time.

Step 3

Exam Tip

(S(8)=64-3(8)=40) है। रेखीय क्षय में समान मात्रा घटती है।

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Question 13/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (M(x)=25+5x), तो (M(6)) क्या है?

If (M(x)=25+5x), what is (M(6))?

Explanation opens after your attempt

Correct Answer

B. (55)

Step 1

Concept

(M(6)=25+5(6)=55). Multiply first and then add.

Step 2

Why this answer is correct

The correct answer is B. (55). (M(6)=25+5(6)=55). Multiply first and then add.

Step 3

Exam Tip

(M(6)=25+5(6)=55) है। पहले गुणा करें फिर जोड़ें।

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Question 14/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (N(x)=58-2x), तो (N(9)) क्या है?

If (N(x)=58-2x), what is (N(9))?

Explanation opens after your attempt

Correct Answer

A. (40)

Step 1

Concept

(N(9)=58-2(9)=40). Pay attention to the sign while subtracting.

Step 2

Why this answer is correct

The correct answer is A. (40). (N(9)=58-2(9)=40). Pay attention to the sign while subtracting.

Step 3

Exam Tip

(N(9)=58-2(9)=40) है। घटाव करते समय चिन्ह पर ध्यान दें।

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Question 15/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

किस नियम में आरंभिक मान (33) और वृद्धि दर (4) है?

Which rule has initial value (33) and growth rate (4)?

Explanation opens after your attempt

Correct Answer

C. (y=33+4x)

Step 1

Concept

The initial value is the constant term (33), and the growth rate is (4). So (y=33+4x) is correct.

Step 2

Why this answer is correct

The correct answer is C. (y=33+4x). The initial value is the constant term (33), and the growth rate is (4). So (y=33+4x) is correct.

Step 3

Exam Tip

आरंभिक मान नियतांक पद (33) है और वृद्धि दर (4) है। इसलिए (y=33+4x) सही है।

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Question 16/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

किस नियम में आरंभिक मान (96) और क्षय दर (12) है?

Which rule has initial value (96) and decay rate (12)?

Explanation opens after your attempt

Correct Answer

D. (y=96-12x)

Step 1

Concept

In decay, the coefficient is negative. Initial value (96) and rate (-12) give (y=96-12x).

Step 2

Why this answer is correct

The correct answer is D. (y=96-12x). In decay, the coefficient is negative. Initial value (96) and rate (-12) give (y=96-12x).

Step 3

Exam Tip

क्षय में गुणांक ऋणात्मक होता है। आरंभिक मान (96) और दर (-12) से (y=96-12x) बनता है।

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Question 17/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (F(t)=41+6t), तो (F(0)) क्या है?

If (F(t)=41+6t), what is (F(0))?

Explanation opens after your attempt

Correct Answer

B. (41)

Step 1

Concept

Putting (t=0), (F(0)=41). This is the initial value.

Step 2

Why this answer is correct

The correct answer is B. (41). Putting (t=0), (F(0)=41). This is the initial value.

Step 3

Exam Tip

(t=0) रखने पर (F(0)=41) है। यह आरंभिक मान है।

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Question 18/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (G(t)=115-5t), तो (G(0)) क्या है?

If (G(t)=115-5t), what is (G(0))?

Explanation opens after your attempt

Correct Answer

C. (115)

Step 1

Concept

Putting (t=0), the decreasing term becomes (0). Therefore (G(0)=115).

Step 2

Why this answer is correct

The correct answer is C. (115). Putting (t=0), the decreasing term becomes (0). Therefore (G(0)=115).

Step 3

Exam Tip

(t=0) रखने पर घटने वाला पद (0) हो जाता है। इसलिए (G(0)=115) है।

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Question 19/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (L(t)=13+4t), तो (L(7)-L(3)) का मान क्या है?

If (L(t)=13+4t), what is the value of (L(7)-L(3))?

Explanation opens after your attempt

Correct Answer

C. (16)

Step 1

Concept

There are (7-3=4) steps, and each step increases by (4). So the difference is (16).

Step 2

Why this answer is correct

The correct answer is C. (16). There are (7-3=4) steps, and each step increases by (4). So the difference is (16).

Step 3

Exam Tip

(7-3=4) चरण हैं और हर चरण वृद्धि (4) है। इसलिए अंतर (16) है।

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Question 20/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (T(t)=140-10t), तो (T(2)-T(6)) का मान क्या है?

If (T(t)=140-10t), what is the value of (T(2)-T(6))?

Explanation opens after your attempt

Correct Answer

C. (40)

Step 1

Concept

(T(2)=120) and (T(6)=80). Therefore the difference is (40).

Step 2

Why this answer is correct

The correct answer is C. (40). (T(2)=120) and (T(6)=80). Therefore the difference is (40).

Step 3

Exam Tip

(T(2)=120) और (T(6)=80) हैं। इसलिए अंतर (40) है।

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Question 21/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (y=27+0x), तो यह किस प्रकार का मान दिखाता है?

If (y=27+0x), what type of value does it show?

Explanation opens after your attempt

Correct Answer

D. स्थिर मानConstant value

Step 1

Concept

The coefficient of (x) is (0), so the value does not change. It is a constant value.

Step 2

Why this answer is correct

The correct answer is D. स्थिर मान / Constant value. The coefficient of (x) is (0), so the value does not change. It is a constant value.

Step 3

Exam Tip

(x) का गुणांक (0) है इसलिए मान नहीं बदलता। यह स्थिर मान है।

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Question 22/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (Z(t)=16+9t), तो वृद्धि दर क्या है?

If (Z(t)=16+9t), what is the growth rate?

Explanation opens after your attempt

Correct Answer

C. (9)

Step 1

Concept

The growth rate equals the coefficient of (t). Here the coefficient is (9).

Step 2

Why this answer is correct

The correct answer is C. (9). The growth rate equals the coefficient of (t). Here the coefficient is (9).

Step 3

Exam Tip

वृद्धि दर (t) के गुणांक के बराबर होती है। यहां गुणांक (9) है।

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Question 23/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (V(t)=108-18t), तो क्षय दर का परिमाण क्या है?

If (V(t)=108-18t), what is the magnitude of the decay rate?

Explanation opens after your attempt

Correct Answer

C. (18)

Step 1

Concept

The rate is (-18), and its magnitude is (18). The amount of decay is taken in positive form.

Step 2

Why this answer is correct

The correct answer is C. (18). The rate is (-18), and its magnitude is (18). The amount of decay is taken in positive form.

Step 3

Exam Tip

दर (-18) है और उसका परिमाण (18) है। क्षय की मात्रा धनात्मक रूप में ली जाती है।

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Question 24/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि कोई राशि शुरू में (12) है और हर चरण (5) बढ़ती है, तो नियम कौन सा होगा?

If a quantity starts at (12) and increases by (5) each step, which rule represents it?

Explanation opens after your attempt

Correct Answer

D. (y=12+5x)

Step 1

Concept

The initial value is (12), and the growth rate is (5). So (y=12+5x) is correct.

Step 2

Why this answer is correct

The correct answer is D. (y=12+5x). The initial value is (12), and the growth rate is (5). So (y=12+5x) is correct.

Step 3

Exam Tip

आरंभिक मान (12) है और वृद्धि दर (5) है। इसलिए (y=12+5x) सही है।

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Question 25/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि कोई राशि शुरू में (66) है और हर चरण (3) घटती है, तो नियम कौन सा होगा?

If a quantity starts at (66) and decreases by (3) each step, which rule represents it?

Explanation opens after your attempt

Correct Answer

C. (y=66-3x)

Step 1

Concept

The initial value is (66), and the decrease is (3) per step. So (y=66-3x) is correct.

Step 2

Why this answer is correct

The correct answer is C. (y=66-3x). The initial value is (66), and the decrease is (3) per step. So (y=66-3x) is correct.

Step 3

Exam Tip

आरंभिक मान (66) है और कमी (3) प्रति चरण है। इसलिए (y=66-3x) सही है।

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Question 26/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (E(t)=21+11t), तो (E(4)) और (E(5)) के बीच अंतर क्या है?

If (E(t)=21+11t), what is the difference between (E(4)) and (E(5))?

Explanation opens after your attempt

Correct Answer

A. (11)

Step 1

Concept

The difference between consecutive values equals the growth rate. Here the rate is (11).

Step 2

Why this answer is correct

The correct answer is A. (11). The difference between consecutive values equals the growth rate. Here the rate is (11).

Step 3

Exam Tip

लगातार दो मानों का अंतर वृद्धि दर के बराबर होता है। यहां दर (11) है।

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Question 27/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (Y(t)=96-12t), तो (Y(3)) से (Y(4)) तक कमी कितनी है?

If (Y(t)=96-12t), what is the decrease from (Y(3)) to (Y(4))?

Explanation opens after your attempt

Correct Answer

A. (12)

Step 1

Concept

The decrease between two consecutive steps equals the magnitude of the rate. Here the decrease is (12).

Step 2

Why this answer is correct

The correct answer is A. (12). The decrease between two consecutive steps equals the magnitude of the rate. Here the decrease is (12).

Step 3

Exam Tip

लगातार दो चरणों में कमी दर के परिमाण के बराबर होती है। यहां कमी (12) है।

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Question 28/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (I(t)=6t+8), तो (t=0) से (t=5) तक कुल वृद्धि कितनी है?

If (I(t)=6t+8), what is the total increase from (t=0) to (t=5)?

Explanation opens after your attempt

Correct Answer

B. (30)

Step 1

Concept

The rate is (6), and there are (5) steps. The total increase is \(6\times5=30\).

Step 2

Why this answer is correct

The correct answer is B. (30). The rate is (6), and there are (5) steps. The total increase is \(6\times5=30\).

Step 3

Exam Tip

दर (6) है और (5) चरण हैं। कुल वृद्धि \(6\times5=30\) है।

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Question 29/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (O(t)=88-4t), तो (t=0) से (t=9) तक कुल कमी कितनी है?

If (O(t)=88-4t), what is the total decrease from (t=0) to (t=9)?

Explanation opens after your attempt

Correct Answer

B. (36)

Step 1

Concept

The decrease rate is (4), and there are (9) steps. The total decrease is \(4\times9=36\).

Step 2

Why this answer is correct

The correct answer is B. (36). The decrease rate is (4), and there are (9) steps. The total decrease is \(4\times9=36\).

Step 3

Exam Tip

कमी दर (4) है और (9) चरण हैं। कुल कमी \(4\times9=36\) है।

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Question 30/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

कौन सा कथन (y=19+7x) के लिए सही है?

Which statement is correct for (y=19+7x)?

Explanation opens after your attempt

Correct Answer

D. यह रेखीय वृद्धि हैIt is linear growth

Step 1

Concept

The coefficient of (x) is (7), which is positive. Therefore it is linear growth.

Step 2

Why this answer is correct

The correct answer is D. यह रेखीय वृद्धि है / It is linear growth. The coefficient of (x) is (7), which is positive. Therefore it is linear growth.

Step 3

Exam Tip

(x) का गुणांक (7) धनात्मक है। इसलिए यह रेखीय वृद्धि है।

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Question 31/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

कौन सा कथन (y=52-4x) के लिए सही है?

Which statement is correct for (y=52-4x)?

Explanation opens after your attempt

Correct Answer

B. यह रेखीय क्षय हैIt is linear decay

Step 1

Concept

The coefficient of (x) is (-4), which is negative. Therefore it is linear decay.

Step 2

Why this answer is correct

The correct answer is B. यह रेखीय क्षय है / It is linear decay. The coefficient of (x) is (-4), which is negative. Therefore it is linear decay.

Step 3

Exam Tip

(x) का गुणांक (-4) ऋणात्मक है। इसलिए यह रेखीय क्षय है।

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Question 32/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (U(t)=9t+14), तो (t=7) पर (U(t)) क्या है?

If (U(t)=9t+14), what is (U(t)) at (t=7)?

Explanation opens after your attempt

Correct Answer

C. (77)

Step 1

Concept

(U(7)=9(7)+14=77). Multiply first and then add.

Step 2

Why this answer is correct

The correct answer is C. (77). (U(7)=9(7)+14=77). Multiply first and then add.

Step 3

Exam Tip

(U(7)=9(7)+14=77) है। पहले गुणा करें फिर जोड़ें।

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Question 33/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (J(t)=100-6t), तो (t=11) पर (J(t)) क्या है?

If (J(t)=100-6t), what is (J(t)) at (t=11)?

Explanation opens after your attempt

Correct Answer

A. (34)

Step 1

Concept

(J(11)=100-6(11)=34). In decay, subtract the total decrease.

Step 2

Why this answer is correct

The correct answer is A. (34). (J(11)=100-6(11)=34). In decay, subtract the total decrease.

Step 3

Exam Tip

(J(11)=100-6(11)=34) है। क्षय में कुल कमी घटाएं।

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Question 34/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (X(t)=18+8t), तो (X(6)) और (X(0)) का अंतर क्या है?

If (X(t)=18+8t), what is the difference between (X(6)) and (X(0))?

Explanation opens after your attempt

Correct Answer

B. (48)

Step 1

Concept

In (6) steps, the increase is (8) each time. The total difference is (48).

Step 2

Why this answer is correct

The correct answer is B. (48). In (6) steps, the increase is (8) each time. The total difference is (48).

Step 3

Exam Tip

(6) चरणों में हर बार (8) वृद्धि होती है। कुल अंतर (48) है।

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Question 35/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (K(t)=160-8t), तो (K(0)-K(12)) का मान क्या है?

If (K(t)=160-8t), what is the value of (K(0)-K(12))?

Explanation opens after your attempt

Correct Answer

B. (96)

Step 1

Concept

There is a decrease of (8) per step for (12) steps. The total decrease is (96).

Step 2

Why this answer is correct

The correct answer is B. (96). There is a decrease of (8) per step for (12) steps. The total decrease is (96).

Step 3

Exam Tip

(12) चरणों में प्रति चरण (8) की कमी है। कुल कमी (96) है।

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Question 36/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

नियम (y=5x+21) में (x) के गुणांक का अर्थ क्या है?

In the rule (y=5x+21), what does the coefficient of (x) mean?

Explanation opens after your attempt

Correct Answer

B. हर चरण में (5) की वृद्धिIncrease of (5) each step

Step 1

Concept

The coefficient of (x) is (5). It shows the growth rate per step.

Step 2

Why this answer is correct

The correct answer is B. हर चरण में (5) की वृद्धि / Increase of (5) each step. The coefficient of (x) is (5). It shows the growth rate per step.

Step 3

Exam Tip

(x) का गुणांक (5) है। यह प्रति चरण वृद्धि दर बताता है।

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Question 37/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

नियम (y=125-5x) में (5) क्या बताता है?

In the rule (y=125-5x), what does (5) represent?

Explanation opens after your attempt

Correct Answer

C. प्रति चरण कमीDecrease per step

Step 1

Concept

(-5x) shows that (5) decreases each step. (125) is the initial value.

Step 2

Why this answer is correct

The correct answer is C. प्रति चरण कमी / Decrease per step. (-5x) shows that (5) decreases each step. (125) is the initial value.

Step 3

Exam Tip

(-5x) बताता है कि हर चरण में (5) की कमी होती है। (125) आरंभिक मान है।

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Question 38/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (P(t)=a+7t) और (P(0)=31), तो (a) क्या है?

If (P(t)=a+7t) and (P(0)=31), what is (a)?

Explanation opens after your attempt

Correct Answer

C. (31)

Step 1

Concept

Putting (t=0), (P(0)=a). Therefore (a=31).

Step 2

Why this answer is correct

The correct answer is C. (31). Putting (t=0), (P(0)=a). Therefore (a=31).

Step 3

Exam Tip

(t=0) रखने पर (P(0)=a) होता है। इसलिए (a=31) है।

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Question 39/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (R(t)=b-10t) और (R(0)=75), तो (b) क्या है?

If (R(t)=b-10t) and (R(0)=75), what is (b)?

Explanation opens after your attempt

Correct Answer

C. (75)

Step 1

Concept

Putting (t=0), (R(0)=b). Therefore (b=75).

Step 2

Why this answer is correct

The correct answer is C. (75). Putting (t=0), (R(0)=b). Therefore (b=75).

Step 3

Exam Tip

(t=0) रखने पर (R(0)=b) होता है। इसलिए (b=75) है।

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Question 40/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (y=29+kt) रेखीय वृद्धि है, तो (k) के लिए कौन सी बात सही होनी चाहिए?

If (y=29+kt) is linear growth, what must be true about (k)?

Explanation opens after your attempt

Correct Answer

A. (k>0)

Step 1

Concept

For linear growth, the rate must be positive. Therefore (k>0) is correct.

Step 2

Why this answer is correct

The correct answer is A. (k>0). For linear growth, the rate must be positive. Therefore (k>0) is correct.

Step 3

Exam Tip

रेखीय वृद्धि के लिए दर धनात्मक होनी चाहिए। इसलिए (k>0) सही है।

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Question 41/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (y=92-kt) रेखीय क्षय है और (k>0), तो (t) बढ़ने पर (y) क्या होगा?

If (y=92-kt) is linear decay and (k>0), what happens to (y) as (t) increases?

Explanation opens after your attempt

Correct Answer

B. (y) घटेगा(y) will decrease

Step 1

Concept

(kt) is being subtracted and (k>0). Therefore (y) will decrease as (t) increases.

Step 2

Why this answer is correct

The correct answer is B. (y) घटेगा / (y) will decrease. (kt) is being subtracted and (k>0). Therefore (y) will decrease as (t) increases.

Step 3

Exam Tip

(kt) घटाया जा रहा है और (k>0) है। इसलिए (t) बढ़ने पर (y) घटेगा।

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Question 42/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (H(t)=36+4t), तो (H(10)) क्या है?

If (H(t)=36+4t), what is (H(10))?

Explanation opens after your attempt

Correct Answer

B. (76)

Step 1

Concept

(H(10)=36+4(10)=76). In simple linear growth, substitute directly.

Step 2

Why this answer is correct

The correct answer is B. (76). (H(10)=36+4(10)=76). In simple linear growth, substitute directly.

Step 3

Exam Tip

(H(10)=36+4(10)=76) है। सरल रेखीय वृद्धि में सीधे प्रतिस्थापन करें।

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Question 43/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (K(t)=144-12t), तो (K(8)) क्या है?

If (K(t)=144-12t), what is (K(8))?

Explanation opens after your attempt

Correct Answer

A. (48)

Step 1

Concept

(K(8)=144-12(8)=48). In decay, subtract the total decrease.

Step 2

Why this answer is correct

The correct answer is A. (48). (K(8)=144-12(8)=48). In decay, subtract the total decrease.

Step 3

Exam Tip

(K(8)=144-12(8)=48) है। क्षय में कुल कमी घटाएं।

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Question 44/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (y=6x+11), तो (x=2) से (x=7) तक (y) में कुल वृद्धि क्या है?

If (y=6x+11), what is the total increase in (y) from (x=2) to (x=7)?

Explanation opens after your attempt

Correct Answer

B. (30)

Step 1

Concept

There is a difference of (5) steps and the rate is (6). The total increase is \(6\times5=30\).

Step 2

Why this answer is correct

The correct answer is B. (30). There is a difference of (5) steps and the rate is (6). The total increase is \(6\times5=30\).

Step 3

Exam Tip

(5) चरणों का अंतर है और दर (6) है। कुल वृद्धि \(6\times5=30\) है।

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Question 45/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (y=118-7x), तो (x=1) से (x=6) तक (y) में कुल कमी क्या है?

If (y=118-7x), what is the total decrease in (y) from (x=1) to (x=6)?

Explanation opens after your attempt

Correct Answer

C. (35)

Step 1

Concept

There is a difference of (5) steps and the decrease rate is (7). The total decrease is \(7\times5=35\).

Step 2

Why this answer is correct

The correct answer is C. (35). There is a difference of (5) steps and the decrease rate is (7). The total decrease is \(7\times5=35\).

Step 3

Exam Tip

(5) चरणों का अंतर है और कमी दर (7) है। कुल कमी \(7\times5=35\) है।

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Question 46/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि किसी वस्तु की संख्या (5) से शुरू होकर हर चरण (6) बढ़ती है, तो (x) चरणों के बाद सही नियम क्या है?

If the number of objects starts from (5) and increases by (6) each step, what is the correct rule after (x) steps?

Explanation opens after your attempt

Correct Answer

D. (y=5+6x)

Step 1

Concept

The initial number is (5), and the growth rate is (6). So (y=5+6x) is correct.

Step 2

Why this answer is correct

The correct answer is D. (y=5+6x). The initial number is (5), and the growth rate is (6). So (y=5+6x) is correct.

Step 3

Exam Tip

आरंभिक संख्या (5) है और वृद्धि दर (6) है। इसलिए (y=5+6x) सही है।

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Question 47/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (y=42+3x), तो (x=6) पर (y) का मान क्या है?

If (y=42+3x), what is the value of (y) at (x=6)?

Explanation opens after your attempt

Correct Answer

B. (60)

Step 1

Concept

(y=42+3(6)=60). In linear growth, substitute the given value directly.

Step 2

Why this answer is correct

The correct answer is B. (60). (y=42+3(6)=60). In linear growth, substitute the given value directly.

Step 3

Exam Tip

(y=42+3(6)=60) है। रेखीय वृद्धि में दिए गए मान को सीधे रखें।

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Question 48/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (y=85-5x), तो (x=9) पर (y) का मान क्या है?

If (y=85-5x), what is the value of (y) at (x=9)?

Explanation opens after your attempt

Correct Answer

A. (40)

Step 1

Concept

(y=85-5(9)=40). In linear decay, subtract the total decrease.

Step 2

Why this answer is correct

The correct answer is A. (40). (y=85-5(9)=40). In linear decay, subtract the total decrease.

Step 3

Exam Tip

(y=85-5(9)=40) है। रेखीय क्षय में कुल कमी घटाएं।

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Question 49/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (y=14+9x), तो (x=2) से (x=6) तक कुल वृद्धि कितनी होगी?

If (y=14+9x), what will be the total increase from (x=2) to (x=6)?

Explanation opens after your attempt

Correct Answer

C. (36)

Step 1

Concept

The change in (x) is (6-2=4) and the rate is (9). The total increase is \(9\times4=36\).

Step 2

Why this answer is correct

The correct answer is C. (36). The change in (x) is (6-2=4) and the rate is (9). The total increase is \(9\times4=36\).

Step 3

Exam Tip

(x) में परिवर्तन (6-2=4) है और दर (9) है। कुल वृद्धि \(9\times4=36\) है।

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Question 50/50 Easy Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 40

यदि (y=132-11x), तो (x=3) से (x=7) तक कुल कमी कितनी होगी?

If (y=132-11x), what will be the total decrease from (x=3) to (x=7)?

Explanation opens after your attempt

Correct Answer

C. (44)

Step 1

Concept

The change in (x) is (7-3=4) and the decay rate is (11). The total decrease is \(11\times4=44\).

Step 2

Why this answer is correct

The correct answer is C. (44). The change in (x) is (7-3=4) and the decay rate is (11). The total decrease is \(11\times4=44\).

Step 3

Exam Tip

(x) में परिवर्तन (7-3=4) है और कमी दर (11) है। कुल कमी \(11\times4=44\) है।

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Class 9 Mathematics Easy Quiz

यदि पौधे की ऊंचाई (H(d)=15+3d) सेमी है, तो यह किस प्रकार का परिवर्तन है?

Concept

Why this answer is correct

Exam Tip

यदि टंकी में पानी (W(t)=90-5t) लीटर है, तो यह किस प्रकार का परिवर्तन है?

Concept

Why this answer is correct

Exam Tip

रेखीय नियम (A(n)=22+4n) में आरंभिक मान क्या है?

Concept

Why this answer is correct

Exam Tip

रेखीय नियम (B(t)=130-8t) में प्रति इकाई परिवर्तन दर क्या है?

Concept

Why this answer is correct

Exam Tip

यदि (P(x)=12+7x), तो (x=4) पर (P(x)) का मान क्या है?

Concept

Why this answer is correct

Exam Tip

यदि (R(h)=84-6h), तो (h=7) पर (R(h)) का मान क्या है?

Concept

Why this answer is correct

Exam Tip

किस नियम में समान वृद्धि (6) प्रति चरण है?

Concept

Why this answer is correct

Exam Tip

किस नियम में समान कमी (4) प्रति चरण है?

Concept

Why this answer is correct

Exam Tip

यदि (C(d)=17+2d), तो (d) में (1) बढ़ने पर (C(d)) कितना बढ़ेगा?

Concept

Why this answer is correct

Exam Tip

यदि (D(t)=72-9t), तो (t) में (1) बढ़ने पर (D(t)) कितना घटेगा?

Concept

Why this answer is correct

Exam Tip

एक विद्यार्थी के हल किए प्रश्न (Q(w)=30+8w) से बढ़ते हैं। (w=5) पर प्रश्न कितने होंगे?

Concept

Why this answer is correct

Exam Tip

एक बोरी में चावल (S(d)=64-3d) किग्रा बचता है। (d=8) पर चावल कितना बचेगा?

Concept

Why this answer is correct

Exam Tip

यदि (M(x)=25+5x), तो (M(6)) क्या है?

Concept

Why this answer is correct

Exam Tip

यदि (N(x)=58-2x), तो (N(9)) क्या है?

Concept

Why this answer is correct

Exam Tip

किस नियम में आरंभिक मान (33) और वृद्धि दर (4) है?

Concept

Why this answer is correct

Exam Tip

किस नियम में आरंभिक मान (96) और क्षय दर (12) है?

Concept

Why this answer is correct

Exam Tip

यदि (F(t)=41+6t), तो (F(0)) क्या है?

Concept

Why this answer is correct

Exam Tip

यदि (G(t)=115-5t), तो (G(0)) क्या है?

Concept

Why this answer is correct

Exam Tip

यदि (L(t)=13+4t), तो (L(7)-L(3)) का मान क्या है?

Concept

Why this answer is correct

Exam Tip

यदि (T(t)=140-10t), तो (T(2)-T(6)) का मान क्या है?

Concept

Why this answer is correct