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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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AAKASH SERIES-PARABOLA-EXERCISE- II
  1. The latusrectum of the parabola 13[(x-3)^(2)+(y-4)^(2) ]= (2x-3y+5)^(2...

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  2. Vertex is (4, 3) and diretctrix is 3x+2y-7=0 then equation of latusrec...

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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. lf L and L^(1) are ends or latusrectum of the parabola 9y^(2)= 4x then...

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  5. The point (2a, a) lies inside the region bounded by the parabola x^(2)...

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  6. The length or double ordinate of parabola ,y^(2) = 8x which subtends a...

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  7. An equilateral triangle is inscribed in the parabola y^(2) = 8x with o...

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  8. If an equilateral Delta is inscribed in a parabola y^(2) = 12x with on...

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  9. The angle subtended by the double ordinate of length 8a of the parabol...

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  10. PQ is a double ordinate of the parabola y^(2)+4x . The locus of its po...

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  11. An arch is in the shape of a parabola whose axis is vertically downwor...

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  12. The point or contact of the Une 2x-y+2 = 0 with the parabola y^(2)=16x...

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  13. The equation of the tangent to the parabola y^(2)=8x inclined at 30^(@...

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  14. The straight line x+y touches the parabola y=x-x^(2) then k =

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  15. Point of contact of y=1-x w.r.t. y^(2)-y+x=0 is

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  16. The line among the following that touches the parabola y^(2)=4ax is

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  17. Assertion (A) : The locus of the point of intersection of perpendicul...

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  18. Two tangents are drawn from (- 2, -1) to y^(2) = 4x. If theta is the a...

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  19. A circle of radius 4 drawn on a chord of the parabola y^(2)=8x as diam...

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  20. Angle between tangents drawn from origin to parabola y^(2)= 4a(x-a)is

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