In the line (y=5-8x), what are the slope and (y)-intercept?
Answer and explanation
Correct answer: Slope −8, y-intercept 5
A line in slope-intercept form is y=mx+c, where m is the slope and c is the y-intercept. The equation y=5−8x can be written as y=−8x+5. Therefore, m=−8 and c=5. In option C, the y-intercept is correct, but the sign of the slope is wrong. Exam tip: Read the coefficient of x carefully; the negative sign is part of the slope.
Frequently asked questions
What is the correct answer to this question?
Slope −8, y-intercept 5
Why is this the correct answer?
A line in slope-intercept form is y=mx+c, where m is the slope and c is the y-intercept. The equation y=5−8x can be written as y=−8x+5. Therefore, m=−8 and c=5. In option C, the y-intercept is correct, but the sign of the slope is wrong. Exam tip: Read the coefficient of x carefully; the negative sign is part of 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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