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Question
Determine whether the following point is collinear.
L(2, 5), M(3, 3), N(5, 1)
Solution
L(2, 5), M(3, 3), N(5, 1)
\[\text { Slope of LM } = \frac{3 - 5}{3 - 2} = \frac{- 2}{1} = - 2\]
\[\text { Slope of MN} = \frac{1 - 3}{5 - 3} = \frac{- 2}{2} = - 1\]
Slope of LM not equal to slope of MN. Thus, the given points are not collinear.
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