SOLUTION: If the line passing through the points (a,2) and (7,7) is parallel to the line passing through the points (4,8) and (a+3,2) what is the value of a?

Question 732309: If the line passing through the points (a,2) and (7,7) is parallel to the line passing through the points (4,8) and (a+3,2) what is the value of a?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
If the line passing through the points (a,2) and (7,7) is parallel to the line passing through the points (4,8) and (a+3,2) what is the value of a?
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parallel lines have equal slopes
slope=∆y/∆x
(7-2)/(7-a)=(2-8)/((a+3)-4)
5/(7-a)=-6/(a-1)
-42+6a=5a-5
a=37
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