2 Answers

Vinod Gubbala · Answer 1 · 2018-01-04T13:40:43+0000

the equation for this is 2ndY - 1stY yours is -20 - (-8)
_________ ---------------
2ndX - 1stX -12 - (-3)

-16
____ simplifs to 16 over 9
-9

Mads Laumann · Answer 2 · 2018-01-07T07:16:56+0000

Slope is

S = y2-y1/x2-x1

x1 = -3 and y1 = -8
x2 = -12 and y2 = -20

Substitute
S = -20 - (-8)/-12 - (-3)

Simplify
S = -20 + 8/-12 + 3
Simplify
S = -12/-9
S = 4/3

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