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The parabola (y+1)^(2)=a(x-2) passes thr...

The parabola `(y+1)^(2)=a(x-2)` passes through point (1,-2). The equaiton of its directrix is

A

4x+1=0

B

4x-1=0

C

4x+9=0

D

4x-9=0

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The correct Answer is:
D
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DIPTI PUBLICATION ( AP EAMET)-PARABOLA-EXERCISE 1 A
  1. The equation of the directrix to the parabola y^(2)-2x-6y-5=0 is

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  2. The equation of the directrix of the parabola y^(2)+4y+4x+2=0 is

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  3. The parabola (y+1)^(2)=a(x-2) passes through point (1,-2). The equaito...

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  4. The equation of the directrix of the parabola y^(2)-4ay-2ax=0 is

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

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  6. The equation of the directrix of the parabola 3x^(2)-9x+5y-2=0 is

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  7. The equation of the directrix of the parabola whose vertex (3,2) and f...

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  8. The equation of the axis of the parabola (y+3)^(2)=4 (x-2) is

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  9. Axis of the parabola x^(2)-3y-6x+6=0 is

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  10. The equation of the axis of the parabola 3x^(2)-9x+5y-2=0 is

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  11. The parabola y=px^(2)+px+q is symmetrical about the line

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

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

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  14. the eccentricity of the parabola y^2-2x-6y+5=0 is

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  15. If the vertex of the parabola y = x^(2)-8x+c lies on x-axis then the v...

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  16. If the ordinate of a point on the parabola y^(2)=4x is twic the latus ...

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  17. In the parabola y^(2)-2y+8x-23=0 the length of double ordinate at a di...

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  18. For a parabola the distance between the focus and the directrix is equ...

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  19. If (9,12) is one end of a double ordinate of the parabola y^(2)=16x th...

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  20. The focal distance of a point on the parabola y^(2)=8x whose focal dis...

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