SOLUTION: find the slope if it exists, of the line containing the pair of points. (-19,-10) and (-20,-15)

Algebra ->  Linear-equations -> SOLUTION: find the slope if it exists, of the line containing the pair of points. (-19,-10) and (-20,-15)      Log On


   

Question 629106: find the slope if it exists, of the line containing the pair of points.

(-19,-10) and (-20,-15)
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=-19 and y%5B1%5D=-10.
Also, is the second point . So this means that x%5B2%5D=-20 and y%5B2%5D=-15.


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


m=%28-15--10%29%2F%28-20--19%29 Plug in y%5B2%5D=-15, y%5B1%5D=-10, x%5B2%5D=-20, and x%5B1%5D=-19


m=%28-5%29%2F%28-20--19%29 Subtract -10 from -15 to get -5


m=%28-5%29%2F%28-1%29 Subtract -19 from -20 to get -1


m=5 Reduce


So the slope of the line that goes through the points and is m=5

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