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Question

If the distances of P(x,y) from A(5, 1) and B (-1, 5)are equal, then prove that 3x = 2y.

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Solution

Given, PA = PB

(x5)2+(y1)2=(x+1)2+(y5)2



On squaring both sides, We get-

(x5)2+(y1)2=(x+1)2+(y5)2

x2+2510x+y2+12y=x2+1+2x+y2+2510y

10x2y=2x10y

10x2x=10y+2y

12x=8y

3x=2y
Hence Proved.


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