The equation \[{{x}^{2}}+kxy+{{y}^{2}}-5x-7y+6=0\] represents a pair of straight lines, then k is [MP PET 2000]

The equation \[{{x}^{2}}+kxy+{{y}^{2}}-5x-7y+6=0\] represents a pair o

1.	The equation \[{{x}^{2}}+kxy+{{y}^{2}}-5x-7y+6=0\] represents a pair of straight lines, then k is [MP PET 2000]
A.	5/3
B.	10/3
C.	3/2
D.	3/10
Answer» C. 3/2

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The equation \[{{x}^{2}}+kxy+{{y}^{2}}-5x-7y+6=0\] represents a pair of straight lines, then k is [MP PET 2000]

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