SOLUTION: Find the slope of the line passing through points (11,20) and (8,2)

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Question 80639: Find the slope of the line passing through points (11,20) and (8,2)
Answer by jim_thompson5910(21667) About Me  (Show Source):
You can put this solution on YOUR website!
Solved by pluggable solver: Finding the slope
To find the slope going from (11,20) to (8,2) we are going to calculate the change in y over the change in x, or the rise over the run. The change is the difference between the two coordinates. So if the y-coordinate of a point goes from 20 to 2, the change in these numbers is -18 (since 2-20=-18). If the x-coordinate changes from 11 to 8, then the change is -3 (since 8-11=-3). So to calculate the slope we use this formula:
Slope:

m=%28change_in_y%29%2F%28change_in_x%29=rise%2Frun where m is the slope

So now we let y%5B2%5D=2,y%5B1%5D=20,x%5B2%5D=8,x%5B1%5D=11Now plug these numbers into the slope formula:

m=%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29=%282-%2820%29%29%2F%288-%2811%29%29+=+-18%2F-3


So after simplification the slope is m=6