SOLUTION: write an equation of the line containing the points indicated:(8,7)and(2,-1)

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Question 52514This question is from textbook
: write an equation of the line containing the points indicated:(8,7)and(2,-1) This question is from textbook

Answer by darq(90) About Me  (Show Source):
You can put this solution on YOUR website!
(8,7)and(2,-1)
find the slope by dividing rise to run.

%287-%28-1%29%29%2F%288-2%29
8%2F6
4%2F3

so slope we found the slope. now we need to find y-intercept. choose one of the points and substitute with the x y values and substitute the m with the slope we have just found.

y=mx%2Bb
-1=4%2F3%2A2%2Bb
-1=8%2F3%2Bb
-11%2F3=b

substitute the values we had found (slope, y-intercept)

y=mx%2Bb
y=4%2F3%2Ax-11%2F3