SOLUTION: Find the slope of the line containing the given pair of points. (1,-9) and (-2,-3)

Algebra ->  Graphs -> SOLUTION: Find the slope of the line containing the given pair of points. (1,-9) and (-2,-3)      Log On


   

Question 423006: Find the slope of the line containing the given pair of points. (1,-9) and (-2,-3)
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=1 and y%5B1%5D=-9.
Also, is the second point . So this means that x%5B2%5D=-2 and y%5B2%5D=-3.


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


m=%28-3--9%29%2F%28-2-1%29 Plug in y%5B2%5D=-3, y%5B1%5D=-9, x%5B2%5D=-2, and x%5B1%5D=1


m=%286%29%2F%28-2-1%29 Subtract -9 from -3 to get 6


m=%286%29%2F%28-3%29 Subtract 1 from -2 to get -3


m=-2 Reduce


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


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