If the points A(1. 2), O(0, 0) and C(a, b) are collinear then

Question

Philoid · Accepted Answer

Three points A, B, C are said to be collinear if,

Area of triangle formed by three points is zero

⇒ Formula of Area of Triangle of three points is given as follows:

⇒ Area, A = 0

⇒ = 0

⇒ 1/2 × {[-b×1] – [-a×2]} = 0

⇒ 2a-b = 0

⇒ 2a = b

Hence Proved