SOLUTION: are these points collinear? (0,-1) (3,5) and -1,-3)

Question 857874: are these points collinear? (0,-1) (3,5) and -1,-3)
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
are these points collinear? (0,-1) (3,5) and -1,-3)
Put them in order.
----------
(-1,-3)
(0,-1)
(3,5)
------
Add points
(-1,-3)
(0,-1)
(1,y)
(2,y)
(3,5)
-----------
Try the change in y = +2
(-1,-3)
(0,-1)
(1,1)
(2,3)
(3,5)
---------
They are colinear.
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Or, you can pick 2 of the 3, find the equation of the line thru them, then see if the 3rd point is on the line.

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