Question 473210
find the slope, if it exists, of the line containing the pair of points:

(5,4) and (9,-10) =
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slope m = diffy/diffx
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(5,+4)
(9,-10)
--------  Subtract
-4,14
Difference in y = 14
Difference in x = -4
m = 14/-4 = -7/2 = -3.5