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If the lines 2 x^(2)+7 x y+3 y^(2)-9 x-7...

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

A

4

B

2

C

1

D

-4

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The correct Answer is:
A
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HIMALAYA PUBLICATION-Pair Of Lines-QUESTION BANK
  1. The triangle formed by x^(2)-3 y^(2)=0 and x=4 is

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

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

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

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

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

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

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

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

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

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

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  15. Point of intersection of pair of lines x^(2)+x y+2 y^(2)-3 x+2 y+4=0 i...

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  16. If a x^(2)+6 x y+b y^(2)-10 x+10 y-6=0 represents a pair of perpendicu...

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  17. The difference of slopes of the lines represented by y^(2)-2 x y sec ^...

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  18. The angle between the pair of lines 2(x+2)^(2)+3(x+2)(y-2)-2(y-2)^(2)=...

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  19. The equation of the pair of lines through (1,-1) and perpendicular to ...

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  20. The equation of the line common to the pair of lines (p^(2)-q^(2)) x^(...

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