What is the slope of the equation (y-5=-2x)?
Answer and explanation
Correct answer: \(-2\)
Adding 5 to both sides gives \(y=-2x+5\). In the linear form \(y=mx+c\), the coefficient of \(x\), namely \(m\), is the slope. Therefore, the slope is \(-2\). Here, \(5\) is the y-intercept, not the slope. Exam tip: Rewrite the equation in \(y=mx+c\) form and identify the coefficient of \(x\).
Frequently asked questions
What is the correct answer to this question?
\(-2\)
Why is this the correct answer?
Adding 5 to both sides gives \(y=-2x+5\). In the linear form \(y=mx+c\), the coefficient of \(x\), namely \(m\), is the slope. Therefore, the slope is \(-2\). Here, \(5\) is the y-intercept, not the slope. Exam tip: Rewrite the equation in \(y=mx+c\) form and identify the coefficient of \(x\).
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Introduction to Polynomials. Topic: Slope and y-intercept.
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