SOLUTION: I'm trying to help my son with his homework. His problem is: Find the value of p so the line that passes through (9,15) and (3,p) has a slope of m=2/3.

Question 878135: I'm trying to help my son with his homework. His problem is: Find the value of p so the line that passes through (9,15) and (3,p) has a slope of m=2/3.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Find the value of p so the line that passes through (9,15) and (3,p) has a slope of m=2/3.
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slope m = diffy/diffx = 2/3
(15 - p)/(9-3) = 2/3
(15 - p)/6 = 2/3
Multiply thru by 6
15 - p = 4
15 = p + 4
p = 11

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