SOLUTION: Find the slope, if it exists, of the line containing the pair of points. (1,10) and (8,-9) the slope is:

Algebra ->  Linear-equations -> SOLUTION: Find the slope, if it exists, of the line containing the pair of points. (1,10) and (8,-9) the slope is:      Log On


   

Question 552605: Find the slope, if it exists, of the line containing the pair of points.
(1,10) and (8,-9)
the slope is:
Answer by fcabanski(1391) About Me  (Show Source):
You can put this solution on YOUR website!
Slope is (y2-y1)/(x2-x1).


A point is (x,y) and it doesn't matter which point you call 1 and which you call 2.


Call (1,10) point 1 and (8,-9) point 2.
(-9-10)/(8-1) = -19/7 is the slope.


Call (8,-9) point 1 and (1,10) point 2.
(10-(-9))/(1-8) = 19/-7 = -19/7 is the slope. It's the same.

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