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In the line (y=11x+13), by how much does (y) increase when (x) increases by (1)?
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Answer and explanation
Correct answer: 11
A line in the form y=mx+c has slope m, which gives the rate of change. Here, m=11, so an increase of 1 in x increases y by 11. The number 13 is the y-intercept, not the amount of increase. Exam tip: In y=mx+c, the coefficient of x is the slope.
Frequently asked questions
What is the correct answer to this question?
11
Why is this the correct answer?
A line in the form y=mx+c has slope m, which gives the rate of change. Here, m=11, so an increase of 1 in x increases y by 11. The number 13 is the y-intercept, not the amount of increase. Exam tip: In y=mx+c, the coefficient of x is the slope.
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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