SOLUTION: Prove that the points A(-2,-2), B(2,1) and C(6,4) are on a straight lineز Show your work.

Algebra ->  Coordinate-system -> SOLUTION: Prove that the points A(-2,-2), B(2,1) and C(6,4) are on a straight lineز Show your work.      Log On


   

Question 890735: Prove that the points A(-2,-2), B(2,1) and C(6,4) are on a straight lineز Show your work.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
You can find the slope of AB and BC. If they're equal the points are colinear.
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You can use any 2 points to find the equation of the line thru them, then test the 3rd point.