If the equation \[2{{x}^{2}}+7xy+3{{y}^{2}}-9x-7y+k=0\] represents a pair of lines, then k is equal to [Kerala (Engg.) 2002]

If the equation \[2{{x}^{2}}+7xy+3{{y}^{2}}-9x-7y+k=0\] represents a p

1.	If the equation \[2{{x}^{2}}+7xy+3{{y}^{2}}-9x-7y+k=0\] represents a pair of lines, then k is equal to [Kerala (Engg.) 2002]
A.	4
B.	2
C.	1
D.	- 4
Answer» B. 2

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If the equation \[2{{x}^{2}}+7xy+3{{y}^{2}}-9x-7y+k=0\] represents a pair of lines, then k is equal to [Kerala (Engg.) 2002]

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