Q. 134.5( 104 Votes )

If three po

Answer :

If the points A (h, 0), B (a, b) and C (0, k) lie on a line

Slope of AB = Slope of BC

- ab = (k-b) (a-h)

- ab = ka- kh –ab +bh

ka +bh = kh

Dividing both the sides by kh

Hence proved.

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