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Let PQR be a right-angled isosceles tria...

Let PQR be a right-angled isosceles triangle right-angled at P(2, 1). If the equation of the line QR is `2x+y=3`, then the equation representing the pair of lines PQ and PR is :

A

`3 x^(2)-3 y^(2)+8 x y+20 x y+10 y+25=0`

B

`3 x^(2)-3 y^(2)+8 x y-20 x y-10 y+25=0`

C

`3 x^(2)-3 y^(2)+8 x y+10 x+15 y+20=0`

D

`3 x^(2)-3 y^(2)-8 x y-10 x-15 y-20=0`

Text Solution

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The correct Answer is:
B
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