Co-linear question?????????? (1 Viewer)

omgiloverice

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If points (-3k,1), (k - 1, k - 3) and (k - 4, k - 5) are collinear, find the value of k .

Btw the answer is -2 x_x
any answer on why?
 

Sy123

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I just evaluate the gradients of AB and BC. Because we know they are collinear their gradients are equal.
 

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