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if the sum of the slopes of the lines gi...

if the sum of the slopes of the lines given by `x^2-2cxy-7y^2=0` is four times their product then c has the value?

A

-2

B

-1

C

2

D

1

Text Solution

Verified by Experts

The correct Answer is:
C
NA
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TARGET PUBLICATION-PAIR OF STRAIGHT LINES-COMPETITIVE THINKING
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  7. If slopes of lines represented by kx^(2)+5xy+y^(2)=0 differ by 1, then...

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  17. The nature of straight lines represented by the equation 4x^(2)+12xy+9...

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