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What is the (y)-intercept of the line (y=12+4x)?
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Answer and explanation
Correct answer: 12
The y-intercept is the y-coordinate where the line meets the y-axis, so x=0. Substituting x=0 in y=12+4x gives y=12. Therefore, the y-intercept is 12. The number 4 is the slope, not the y-intercept. Exam tip: in the form y=mx+c, c is the y-intercept.
Frequently asked questions
What is the correct answer to this question?
12
Why is this the correct answer?
The y-intercept is the y-coordinate where the line meets the y-axis, so x=0. Substituting x=0 in y=12+4x gives y=12. Therefore, the y-intercept is 12. The number 4 is the slope, not the y-intercept. Exam tip: in the form y=mx+c, c is the y-intercept.
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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