In the line (y=15-5x), what are the slope and (y)-intercept?
Answer and explanation
Correct answer: Slope −5, y-intercept 15
The slope-intercept form of a line is y = mx + c, where m is the slope and c is the y-intercept. Rewriting the given equation as y = −5x + 15 gives m = −5 and c = 15. Hence, option C is correct. In option B, the sign of the coefficient of x is incorrect. Exam tip: Always check the sign attached to the coefficient of x when finding the slope.
Frequently asked questions
What is the correct answer to this question?
Slope −5, y-intercept 15
Why is this the correct answer?
The slope-intercept form of a line is y = mx + c, where m is the slope and c is the y-intercept. Rewriting the given equation as y = −5x + 15 gives m = −5 and c = 15. Hence, option C is correct. In option B, the sign of the coefficient of x is incorrect. Exam tip: Always check the sign attached to the coefficient of x when finding 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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