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Question

The point on the line 4x+3y=5, which is equidistant from (1,2) and (3,4), is

A
(7,4)
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B
(10,15)
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C
(17,87)
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D
(0,54)
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Solution

The correct option is B (10,15)
Let the point (x1,y1) be on the line 4x+3y=5.
4x1+3y1=5 ....(i)
Also, we have
(x11)2+(y12)2=(x13)3+(y14)2
x21+12x1+y21+44y1=x21+96x1+y21+168y1
4x1+4y1=20
x1+y1=5 ....(ii)
From equations (i) and (ii), we get
y1=15 and x1=10

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