The equations of the lines represented by the equation \[a{{x}^{2}}+(a+b)xy+b{{y}^{2}}+x+y=0\] are

The equations of the lines represented by the equation \[a{{x}^{2}}+(a

1.	The equations of the lines represented by the equation \[a{{x}^{2}}+(a+b)xy+b{{y}^{2}}+x+y=0\] are
A.	\[ax+by+1=0\], \[x+y=0\]
B.	\[ax+by-1=0\], \[x+y=0\]
C.	\[ax+by+1=0\], \[x-y=0\]
D.	None of these
Answer» B. \[ax+by-1=0\], \[x+y=0\]

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The equations of the lines represented by the equation \[a{{x}^{2}}+(a+b)xy+b{{y}^{2}}+x+y=0\] are

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