SOLUTION: A (-1,2), B (3,a) and C (-3,7) are collinear. Find a
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Question 976417: A (-1,2), B (3,a) and C (-3,7) are collinear. Find a
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
(1) Slope
(2) Slope Again but using point B
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