A line passes through the point and is perpendicular to the line joining and

MATHEMATICS · Single correct · A Level · Mathematics · Coordinate geometry in the (x y) plane · Coordinate geometry in the (x y) plane

Problem

A line

L

passes through the point

(2,-1)

and is perpendicular to the line joining

(-1,4)

and

(3,2)

. Which of the following is the equation of

L

? (a)

y = -2x + 3

(b)

y = 2x + 5

(c)

y = 2x - 5

(d)

y = -\dfrac{1}{2}x