रेखा (y=-6x+20) में (x) कितने बढ़ाने पर (y) (42) घटेगा?
In the line (y=-6x+20), by how much must (x) increase for (y) to decrease by (42)?
Explanation opens after your attempt
B. (7)
Concept
The slope is (-6), so the decrease is \(6\Delta x\). From \(6\Delta x=42\), \(\Delta x=7\).
Why this answer is correct
The correct answer is B. (7). The slope is (-6), so the decrease is \(6\Delta x\). From \(6\Delta x=42\), \(\Delta x=7\).
Exam Tip
ढाल (-6) है, इसलिए कमी \(6\Delta x\) होगी। \(6\Delta x=42\) से \(\Delta x=7\) है।
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