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The equation x^(2)+ky^(2)+4xy=0 represen...

The equation `x^(2)+ky^(2)+4xy=0` represents two coincident lines if `k=`

A

0

B

1

C

4

D

16

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The correct Answer is:
C
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TARGET PUBLICATION-PAIR OF STRAIGHT LINES-COMPETITIVE THINKING
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  2. The nature of straight lines represented by the equation 4x^(2)+12xy+9...

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  3. The equation x^(2)+ky^(2)+4xy=0 represents two coincident lines if k=

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  4. if lines represented by equation px^(2)-qy^(2)=0 are distinct, then

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  5. The angle between the pair of straight lines y^(2)sin^(2)theta-xy sin^...

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  6. Which of the following equation does not represent a pair of li...

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  7. The angle between the lines 3x^(2)+7xy+2y^(2)+5x+5y+2=0 is given by

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  8. The equation xy+a^2=a(x+y) represents

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  9. If ax^(2)-y^(2)+4x-y=0 represents a pair off lines then a=

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  10. If the equation kxy+10x+6y+4=0 represents a pair of lines then : k=

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  11. The equation x^(2)+kxy+y^(2)-5x-7y+6=0 represents a pair of straight l...

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  12. The point of intersection of lines represented by x^(2) -y ^(2) ...

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  13. If 2x^(2)-10xy+2 lamday^(2)+5x-16y-3=0 represents a pair of straight l...

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  14. Let L be the line joining the origin to the point of intersection of t...

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  15. The line 5x+y-1=0 coincides with one of the lines given by 5x^(2)+xy-k...

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  16. The angle between the lines 3x^(2)+7xy+2y^(2)+5x+5y+2=0 is given by

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  17. The angle between the lines in x^2-xy-6y^2-7x+31y-18=0 is

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  18. If the angle between the pair of straight lines represented by the equ...

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  19. If the angle between the two lines represented by 2x^(2)+5xy+3y^(2)+6x...

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