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Question

Determine if the points (1, 5), (2, 3) and (− 2, − 11) are collinear.

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Solution

Let the points (1, 5), (2, 3), and (−2, −11) be representing the vertices A, B, and C of the given triangle respectively.

Let

Therefore, the points (1, 5), (2, 3), and (−2, −11) are not collinear.


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