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If the line (y=mx+c) cuts the (y)-axis at ( (0,-9) ), what is (c)?
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Answer and explanation
Correct answer: -9
In the form \(y=mx+c\), \(c\) is the y-intercept, that is, the y-coordinate where the line meets the y-axis. The given point is \((0,-9)\), so \(c=-9\). Choosing \(9\) would ignore the negative sign. Exam tip: every point on the y-axis has x-coordinate 0.
Frequently asked questions
What is the correct answer to this question?
-9
Why is this the correct answer?
In the form \(y=mx+c\), \(c\) is the y-intercept, that is, the y-coordinate where the line meets the y-axis. The given point is \((0,-9)\), so \(c=-9\). Choosing \(9\) would ignore the negative sign. Exam tip: every point on the y-axis has x-coordinate 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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