What is the best solution of coordinate geometry of class 10 ,give me easy way to solve this question quickly . Determine if the points (1, 5), (2, 3) and (-2, -11) are collinear.
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The sum of the lengths of any two line segments is equal to the length of the third line segment then all three points are collinear.
Consider, A = (1, 5) B = (2, 3) and C = (-2, -11)
Find the distance between points; say AB, BC and CA
Since AB + BC ≠ CA
Therefore, the points (1, 5), (2, 3), and ( – 2, – 11) are not collinear.