SOLUTION: A line with x-intercept 3 and passes through (-2,1) and (p,3) solve for p as well

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Question 914269: A line with x-intercept 3 and passes through (-2,1) and (p,3) solve for p as well
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
Since all the three points are co linear
slope of a set of points are equal
(3,0) (-2,1)
(1-0)/(-2-3)
=1/-5
slope of
(-2,1) (p,3)
(3-1)/(p+2)
2/(p+2)=-1/5
-p-2=10
-p=12
p=-12

p=-12