If Defensive midfielder A(1,4), Attacking midfielder B(2,−3) and Striker E(a,b) lie on the same straight line and B is equidistant from A and E, find the position of E.

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Since Points A, B, E lie on the same straight line And B is equidistant from A and E ∴ B is the mid-point of AE Since B is the mid-point of AE Coordinates of B = ((𝑥1 + 𝑥2)/2,(𝑦1 +𝑦2)/2) (2, −3) = ((𝟏 + 𝒂)/𝟐,(𝟒 +𝒃)/𝟐) Comparing x and y coordinates 2 = (𝟏 + 𝒂)/𝟐 2 × 2 = 1 + a 4 = 1 + a 4 − 1 = a a = 3 −3 = (𝟒 + 𝒃)/𝟐 −3 × 2 = 4 + b −6 = 4 + b −6 – 4 = b b = −10 Thus, Position of the Striker (E) = (a, b) = (3, −10)

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo