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 (x1−1)2+(y1−2)2=(x1−3)3+(y1−4)2 ⇒x21+1−2x1+y21+4−4y1=x21+9−6x1+y21+16−8y1 ⇒4x1+4y1=20 ⇒x1+y1=5 ....(ii) From equations (i) and (ii), we get y1=15 and x1=−10