What is the slope of the line (y=-15)?
Answer and explanation
Correct answer: \(0\)
In the line \(y=-15\), the value of \(y\) remains constant for every value of \(x\), so it is a horizontal line parallel to the x-axis. For a horizontal line, the change in \(y\) is \(0\), hence its slope is \(0\). The value \(-15\) is the y-intercept, not the slope. Exam tip: Every line of the form \(y=c\) has slope \(0\).
Frequently asked questions
What is the correct answer to this question?
\(0\)
Why is this the correct answer?
In the line \(y=-15\), the value of \(y\) remains constant for every value of \(x\), so it is a horizontal line parallel to the x-axis. For a horizontal line, the change in \(y\) is \(0\), hence its slope is \(0\). The value \(-15\) is the y-intercept, not the slope. Exam tip: Every line of the form \(y=c\) has slope \(0\).
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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