SOLUTION: prove that (-1,-1),(1,5),(2,8)are collinear points

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Question 894503: prove that (-1,-1),(1,5),(2,8)are collinear points
Answer by Alan3354(69443) About Me  (Show Source):
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prove that (-1,-1),(1,5),(2,8)are collinear points
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Find an equation of a line thru any 2 of the points, then see if the 3rd point is on it.