If the sum of the slopes of the lines given by x2 - 2cxy - 7y2 = 0 is – McqOptions

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1.	If the sum of the slopes of the lines given by x2 - 2cxy - 7y2 = 0 is four time their products, then the value of c is
A.	1
B.	-1
C.	-2
D.	2
Answer» E.

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