Pair of straight lines perpendicular to each other represented by[Roor – McqOptions

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1.	Pair of straight lines perpendicular to each other represented by[Roorkee 1990]
A.	\[2{{x}^{2}}=2y(2x+y)\]
B.	\[{{x}^{2}}+{{y}^{2}}+3=0\]
C.	\[2{{x}^{2}}=y(2x+y)\]
D.	\[{{x}^{2}}=2(x-y)\]
Answer» B. \[{{x}^{2}}+{{y}^{2}}+3=0\]

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