Q.

The locus of a point which is collinear with the points (3,4)  and (4,3)  is

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a

3x+2y+12=0

b

2x+3y+12=0

c

2x+3y12=0

d

x7y+25=0

answer is D.

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Detailed Solution

A,P,B  are collinear

  Question Image

Slope of AP=  slope of AB

y4x3=17

7y28=x3

x7y3+28=0

x7y+25=0

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