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The equation of the directirix of the pa...

The equation of the directirix of the parabola `x ^(2) -4x -8y +12=0` is-

A

y=1

B

x=1

C

x=-1

D

y=-1

Text Solution

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The correct Answer is:
(A)
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Knowledge Check

  • The equation of directrix of the parabola 3y^(2) =- 4x is _

    A
    3x + 1 = 0
    B
    3x + 2 = 0
    C
    3x - 1 = 0
    D
    3x - 2 = 0

  • The equation of directrix of the parabola 3x^2=-4y is

    A
    3y-1=0
    B
    3x-1=0
    C
    3y+1=0
    D
    3x+1=0

  • The equation of directrix of the parabola 4x^(2) =3y is _

    A
    16 y + 3 =0
    B
    16 y - 3 = 0
    C
    8 y + 3 = 0
    D
    8y - 3 = 0

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