What are the slope and (y)-intercept in the equation (4y=8x-28)?
Answer and explanation
Correct answer: Slope 2, y-intercept -7
To identify the slope and y-intercept, write the equation in the form y=mx+c. Dividing every term of 4y=8x-28 by 4 gives y=2x-7. Hence, m=2 is the slope and c=-7 is the y-intercept. Option A incorrectly uses the coefficients before dividing by 4. Exam tip: divide every term by the coefficient of y before identifying m and c.
Frequently asked questions
What is the correct answer to this question?
Slope 2, y-intercept -7
Why is this the correct answer?
To identify the slope and y-intercept, write the equation in the form y=mx+c. Dividing every term of 4y=8x-28 by 4 gives y=2x-7. Hence, m=2 is the slope and c=-7 is the y-intercept. Option A incorrectly uses the coefficients before dividing by 4. Exam tip: divide every term by the coefficient of y before identifying m and c.
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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