Which statement about the lines (y=4x+7) and (y=4x-2) is correct?
Answer and explanation
Correct answer: Both lines have the same slope
In the form y = mx + c, the coefficient m of x is the slope. The coefficient of x is 4 in both equations, so the two lines have the same slope and are parallel. Their y-intercepts are 7 and -2 respectively, so option B is incorrect. Exam tip: To find the slope in y = mx + c, identify the coefficient of x.
Frequently asked questions
What is the correct answer to this question?
Both lines have the same slope
Why is this the correct answer?
In the form y = mx + c, the coefficient m of x is the slope. The coefficient of x is 4 in both equations, so the two lines have the same slope and are parallel. Their y-intercepts are 7 and -2 respectively, so option B is incorrect. Exam tip: To find the slope in y = mx + c, identify the coefficient of x.
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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