Answer:
Explanation:
(3, 4), (2,7)
slope = m = = = = -3
She makes an error with the formula for finding the slope.
the formula to finding the slope is :
you can reverse it so that its y1 - y2/x1 -x2 but top and bottom must always be in the same order
the classmate's answer should have been 4-7/3-2 which would equal -3/1 = -3
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