Question

Anya found the slope of the line that passes through the points (–7, 4) and (2, –3). Her work is shown below. Let (x2, y2) be (–7, 4) and (x1, y1) be (2, –3). m = = = The slope is . What error did she make?

Answer 1

Explanation:

This line passes through the points (–7, 4) and (2, –3). Here x increases by 9 and y decreases by 7. Thus the slope is m = rise / run = -7/9.

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Answer 2

C. She used an incorrect formula. The formula should be the change in y-values with respect to the change in the x-values.