Question

Q. 2. Find the value of k for which the points
(3k - 1, k-2) (k, k - 7) and (k - 1, - k - 2) are collinear.​

Answer 1

Answer:

Let P(3k - 1, k-2) , Q(k , k - 7) and R ( k - 1 , -k - 2) are the points.

given they are collinear

i.e, PQ = QR + RP

squaring both sides

we get,

(PQ) ^2 = (QR) ^2 + (RP) ^2

using distance formulae