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Question

Find k if PQ || RS and P(2,4)Q(3,6),R(3,1),S(5,k)

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Solution

PQRS

So, slope of line joining P and Q = slope of line joining R and S

Slope m of line joining the points (x1,y1) and
(x2,y2) is

m=y2y1x2x1

So,
m=6432=k153

k12=2

k1=4

k=5

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