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If y=2 is the directrix and (0,1) is the...

If `y=2` is the directrix and `(0,1)` is the vertex of the parabola `x^2+lambday+mu=0` , then (a)`lambda=4` (b) `mu=8` (c) `lambda=-8` (d) `mu=4`

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Knowledge Check

  • The vertex of the parabola y^2 + 4x = 0 is

    A
    `(4,0)`
    B
    `(-4,0)`
    C
    `(-1,0)`
    D
    `(0,0)`

  • The equation of the directrix of the parabola y^(2)=-8x is

    A
    `y+2=0`
    B
    `x-2=0`
    C
    `y-2=0`
    D
    `x+2=0`

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

    A
    `x= -1`
    B
    x=1
    C
    `x = (-3)/2`
    D
    ` x= 3/2`

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