रेखा (y=-8x+30) में (x) कितने बढ़ाने पर (y) (64) घटेगा?

In the line (y=-8x+30), by how much must (x) increase for (y) to decrease by (64)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (8)

Step 1

Concept

The slope is (-8), so the decrease is \(8\Delta x\). From \(8\Delta x=64\), \(\Delta x=8\).

Step 2

Why this answer is correct

The correct answer is C. (8). The slope is (-8), so the decrease is \(8\Delta x\). From \(8\Delta x=64\), \(\Delta x=8\).

Step 3

Exam Tip

ढाल (-8) है, इसलिए कमी \(8\Delta x\) होगी। \(8\Delta x=64\) से \(\Delta x=8\) है।

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Mathematics Answer, Explanation and Revision Hints

रेखा (y=-8x+30) में (x) कितने बढ़ाने पर (y) (64) घटेगा? / In the line (y=-8x+30), by how much must (x) increase for (y) to decrease by (64)?

Correct Answer: C. (8). Explanation: ढाल (-8) है, इसलिए कमी \(8\Delta x\) होगी। \(8\Delta x=64\) से \(\Delta x=8\) है। / The slope is (-8), so the decrease is \(8\Delta x\). From \(8\Delta x=64\), \(\Delta x=8\).

Which concept should I revise for this Mathematics MCQ?

The slope is (-8), so the decrease is \(8\Delta x\). From \(8\Delta x=64\), \(\Delta x=8\).

What exam hint can help solve this Mathematics question?

ढाल (-8) है, इसलिए कमी \(8\Delta x\) होगी। \(8\Delta x=64\) से \(\Delta x=8\) है।