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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

1

B

-1

C

2

D

-2

Text Solution

Verified by Experts

The correct Answer is:
C
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HIMALAYA PUBLICATION-Pair Of Lines-QUESTION BANK
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  3. If the sum of the slopes of the lines given by x^(2)-2cxy-7y^(2)=0 is...

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  4. If one of the lines given by 6 x^(2)-x y+4 c y^(2)=0 is 3 x+4 y=0, the...

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  5. If the pair of lines ax^2 +2 (a + b) xy + by^2 =0 lie along diameters ...

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  6. If the angle between the pair of linesx^(2)-3 x y+lambda y^(2)+3 x-5 y...

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  7. The triangle formed by x^(2)-3 y^(2)=0 and x=4 is

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  8. The distance between the pair of parallel lines x^(2)+4 x y+4 y^(2)+3 ...

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  9. If the lines 2 x^(2)+7 x y+3 y^(2)-9 x-7 y+k=0 represents a pair of li...

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  10. The equation of bisectors of the angle between the two lines 2 x^(2)-3...

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  11. The quadrilateral formed by the pair of lines x y+x+y+1=0, x y+3 x+3 y...

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  12. If x y+x+y+1=0 and x+q y-3=0 are concurrent then q=

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  13. The equation x^(2)-3 x y+lambda y^(2)+3 x-5 y+2=0, whose lambda is a r...

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  14. Circumcentre of the triangle formed by the lines xy+2x+2y+4=0 and x+...

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  15. The distance between the parallel lines 9 x^(2)-6 x y+y^(2)+18 x-6 y+8...

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  16. The angle between the pair of lines 2 x^(2)+5 x y+2 y^(2)+3 x+3 y+1=0 ...

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  17. The combined equation to a pair of lines passing through the origin an...

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  18. The pair of Lines h(x^(2)-y^(2))+p x y=0 bisects the angle between the...

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  19. The equation of the pair of bisectors of the angles between the pair o...

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  20. The triangle formed by the pair of lines x^(2)-4 y^(2)=0 and the line ...

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