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A student found the slop of a line passes through the point (3,15) and (5,9) to be - 1/3 what mistake did he make

1 Answer

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You can find the Slope by using:

m = y2-y1 / x2-x1
m = 9-15 / 5-3
m = -6/2

Divide -6 by 2 and you get:

m = -3
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