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Find the equation perpendicular to 2x – y=4 and pass through (2, 4).(a) 2x+y-10 = 0(b) x+2y+10 = 0(c) x+2y-10 = 0(d) x+y-10 = 0I got this question in quiz.Question is taken from Distance of a Point from a Line in section Straight Lines of Mathematics – Class 11

Answer»

The correct option is (c) X+2y-10 = 0

To explain: LINE 2x – y=4 has SLOPE 2. Line PERPENDICULAR to given line has slope -1/2.

Equation is (y-4) = (-1/2) (x-2)

2y-8 = -x + 2 => x+2y -10 = 0.



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