Question 923580
Do it like this one.
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 (2, -8) and (x, 2); slope: -10/3
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 Slope m = diffy/diffx
 m = (-8-2)/(2 - x) = -10/3
 -10/(2-x) = -10/3
 -30 = -10(2-x) = -20 + 10x
 10x = -10
 x = -1