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Find the value(s) of p for which the points (p+1, 2p-2) , (p-1,p) and (p-3, 2p-6) are collinear.

Find the value(s) of p for which the points (p+1, 2p-2) , (p-1,p) and (p-3, 2p-6) are collinear.

Grade:9

1 Answers

Vijay Mukati
askIITians Faculty 2590 Points
8 years ago
Dear Student,

Two ways to find p.
First, If three points A,B and C are collinear, then area of triangle ABC will be zero.
Second. If three points A,B and C are collinear, then slope of AB = slope of BC.

(Second method will be simplest)

Thanks.

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