SOLUTION: How can I find the slope of the line pasing through the points (6,7) and (2,-8).

Algebra ->  Graphs -> SOLUTION: How can I find the slope of the line pasing through the points (6,7) and (2,-8).      Log On


   

Question 163787: How can I find the slope of the line pasing through the points (6,7) and (2,-8).
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
There is a formula for the slope between two points that looks like this:
m=+%28rise%29%2F%28run%29+=+%28y%5B2%5D+-+y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29+
.
Since they gave you:
(6,7) and (2,-8)
.
then
(x[1],y[1])=(6,7)
(x[2],y[2])=(2,-8)
.
Plugging it in:
m=+%28rise%29%2F%28run%29+=+%28y%5B2%5D+-+y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29+
m=+%28rise%29%2F%28run%29+=+%28-8+-+7%29%2F%282-6%29+
m=+%28rise%29%2F%28run%29+=+%28-15%29%2F%28-4%29+
m=+%28rise%29%2F%28run%29+=+-15%2F4+