If the equation \[a{{x}^{2}}+2hxy+b{{y}^{2}}=0\] represents two lines \[y={{m}_{1}}x\] and \[y={{m}_{2}}x\], then [CEE 1993; MP PET 1988]

\[{{m}_{1}}+{{m}_{2}}=\frac{2h}{b}\] and \[{{m}_{1}}{{m}_{2}}=\frac{-a}{b}\]

\[{{m}_{1}}+{{m}_{2}}=\frac{-2h}{b}\] and \[{{m}_{1}}{{m}_{2}}=\frac{a}{b}\]

\[{{m}_{1}}+{{m}_{2}}=\frac{2h}{b}\] and \[{{m}_{1}}{{m}_{2}}=\frac{a}{b}\]

\[{{m}_{1}}+{{m}_{2}}=\frac{2h}{b}\] and \[{{m}_{1}}{{m}_{2}}=-ab\]

If the equation \[a{{x}^{2}}+2hxy+b{{y}^{2}}=0\] represents two lines

1.	If the equation \[a{{x}^{2}}+2hxy+b{{y}^{2}}=0\] represents two lines \[y={{m}_{1}}x\] and \[y={{m}_{2}}x\], then [CEE 1993; MP PET 1988]
A.	\[{{m}_{1}}+{{m}_{2}}=\frac{-2h}{b}\] and \[{{m}_{1}}{{m}_{2}}=\frac{a}{b}\]
B.	\[{{m}_{1}}+{{m}_{2}}=\frac{2h}{b}\] and \[{{m}_{1}}{{m}_{2}}=\frac{-a}{b}\]
C.	\[{{m}_{1}}+{{m}_{2}}=\frac{2h}{b}\] and \[{{m}_{1}}{{m}_{2}}=\frac{a}{b}\]
D.	\[{{m}_{1}}+{{m}_{2}}=\frac{2h}{b}\] and \[{{m}_{1}}{{m}_{2}}=-ab\]
Answer» B. \[{{m}_{1}}+{{m}_{2}}=\frac{2h}{b}\] and \[{{m}_{1}}{{m}_{2}}=\frac{-a}{b}\]

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If the equation \[a{{x}^{2}}+2hxy+b{{y}^{2}}=0\] represents two lines \[y={{m}_{1}}x\] and \[y={{m}_{2}}x\], then [CEE 1993; MP PET 1988]

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