SOLUTION: I need help with this problem: Find y if the line through (3,1) and (7,y) has a slope of 2. Thanks for your response.

Algebra ->  Linear-equations -> SOLUTION: I need help with this problem: Find y if the line through (3,1) and (7,y) has a slope of 2. Thanks for your response.      Log On


   



Question 489739: I need help with this problem:
Find y if the line through (3,1) and (7,y) has a slope of 2. Thanks for your response.

Answer by Gogonati(855) About Me  (Show Source):
You can put this solution on YOUR website!
The equation of the line is:y-y%5B0%5D=m%28x-x%5B0%5D%29, where (x, y)=(3, 1), and
(xo, yo)=(7, y)substituting into above equation we get:
1-y=2%283-7%29<=>y=1%2B8<=>y=9.