असमानता \(x-3y\le9\) में (y) के रूप में सही रूप कौन सा है?
What is the correct form in terms of (y) for \(x-3y\le9\)?
Explanation opens after your attempt
Correct Answer
A. \(y\ge\frac{x-9}{3}\)
Concept
From \(x-3y\le9\), we get \(-3y\le9-x\), hence \(y\ge\frac{x-9}{3}\). Dividing by a negative reverses the sign.
Why this answer is correct
The correct answer is A. \(y\ge\frac{x-9}{3}\). From \(x-3y\le9\), we get \(-3y\le9-x\), hence \(y\ge\frac{x-9}{3}\). Dividing by a negative reverses the sign.
Exam Tip
\(x-3y\le9\) से \(-3y\le9-x\), इसलिए \(y\ge\frac{x-9}{3}\) है। ऋणात्मक से भाग देने पर चिन्ह उलटता है।
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