यदि (y=90+ax) में (x=5) से (x=12) तक (y) (63) बढ़ता है, तो (a) क्या है?

If in (y=90+ax), (y) increases by (63) from (x=5) to (x=12), what is (a)?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

C. (9)

Step 1

Concept

The change in (x) is (7). From (7a=63), (a=9).

Step 2

Why this answer is correct

The correct answer is C. (9). The change in (x) is (7). From (7a=63), (a=9).

Step 3

Exam Tip

(x) में परिवर्तन (7) है। (7a=63) से (a=9) मिलता है।

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Mathematics Answer, Explanation and Revision Hints

यदि (y=90+ax) में (x=5) से (x=12) तक (y) (63) बढ़ता है, तो (a) क्या है? / If in (y=90+ax), (y) increases by (63) from (x=5) to (x=12), what is (a)?

Correct Answer: C. (9). Explanation: (x) में परिवर्तन (7) है। (7a=63) से (a=9) मिलता है। / The change in (x) is (7). From (7a=63), (a=9).

Which concept should I revise for this Mathematics MCQ?

The change in (x) is (7). From (7a=63), (a=9).

What exam hint can help solve this Mathematics question?

(x) में परिवर्तन (7) है। (7a=63) से (a=9) मिलता है।