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If 2x + y + k - 0 is a focal chord of y^...

If 2x + y + k - 0 is a focal chord of `y^(2) + 4x` = 0 then k =

A

2

B

4

C

`-4`

D

`-2`

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-PARABOLA-EXERCISE- I
  1. The coordinates of a point on the parabola y^(2)= 16x whose focal dist...

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  2. The focal distance of the point (4,2) on the parabola x^(2)=8y is

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  3. If 2x + y + k - 0 is a focal chord of y^(2) + 4x = 0 then k =

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  4. lf ( 18, 12) is one end of a double ordinate of y^(2) = 8x then equati...

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  5. The vertex and focus of parabola (y-2)^(2) = -4(x-4) are

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  6. The equation of the latus rectum of the parabola x^(2)-12x-8y+52=0 is

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  7. The ends of the latus rectum of the parabola (x-2)^(2)=-6(y+1) are

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  8. The focal distance of the point (9,6) on the parabola y^(2)=4x is

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  9. If (6, 9) is one end of double ordinate of x^(2)=4y then equation of d...

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  10. If x+y-1 = 0 touches the parabola y^(2) = kx the value of k is

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  11. If the line x-y+k =0 is a tangent to the parabola x^(2) = 4y then k =

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  12. The condition for- the line 4x + 3y + k = 0 to intersect y^(2) = 8x is

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  13. The equation of the tangent to the parabola y^(2)=16x and perpendicul...

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  14. The sum and product of the slopes of the tangents to the parabola y^(2...

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  15. The locus of the point of intersection of two tangents to the parabola...

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  16. The locus of the point of intersection of perpendicular tangents to th...

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  17. Angle between tangents drawn at ends of focal chord of parabola y^(2) ...

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  18. Point of intersection of tangents to the paraholu (y-2)^(2) = 4(x-1) a...

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  19. The equation of the normal to the curve x^2=4y at (2,1) is

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  20. The graph represented by the equations x= sin ^(2) t, y = 2 cos t is

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