SOLUTION: find the slope, if it exists (5,8) (10,-10)

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Question 243583: find the slope, if it exists
(5,8) (10,-10)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

Note: is the first point . So this means that x%5B1%5D=5 and y%5B1%5D=8.
Also, is the second point . So this means that x%5B2%5D=10 and y%5B2%5D=-10.


m=%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29 Start with the slope formula.


m=%28-10-8%29%2F%2810-5%29 Plug in y%5B2%5D=-10, y%5B1%5D=8, x%5B2%5D=10, and x%5B1%5D=5


m=%28-18%29%2F%2810-5%29 Subtract 8 from -10 to get -18


m=%28-18%29%2F%285%29 Subtract 5 from 10 to get 5


So the slope of the line that goes through the points and is m=-18%2F5