Question 954266
f the line passing through the points (a, 2) and (6,7) 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 the same slope
slope=∆y/∆x
(7-2)(6-a)=(8-2)/(4-a+3)
5/(6-a)=6/(7-a)
35-5a=36-6a
a=1