The points and are such that the line is perpendicular to the line joining and

MATHEMATICS · Single correct · CBSE · Mathematics · Straight Lines · Straight Lines

Problem

The points

A(k,1)

and

B(3,5)

are such that the line

AB

is perpendicular to the line joining

C(2,-1)

and

D(6,2)

. The value of

k

is (a)

-\dfrac{7}{3}

(b)

6

(c)

0

(d)

-6