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

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

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

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

Equation of the directrix of the parabola 5y^(2) = 4x is

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

The equation of the directrix of the parabola x^2 = 28y = 0 is

Equation of the directrix of the parabola y^(2)+4x+2=0 is

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

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

The equation of the directrix of the parabola x^(2) - 4x - 8y + 12 = 0 is (i) y = 0 (ii) x - 1 = 0 (iii) y+ 1 = 0 (iv) x + 1 = 0