Write down the equation of the directrix of the parabola `y^2 = 4x`.

The directrix of the parabola y^2=4ax is :

The directrix of the parabola y^(2) + 4x + 3 = 0 is :

The equation of the directrix of the parabola : y^2+ 4y + 4x+2=0 is:

Show that the equation of the tangent to the parabola y^(2) = 4 ax at (x_(1), y_(1)) is y y_(1) = 2a(x + x_(1)) .

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

The vertex of the parabola y^2=4a(x+a) is:

Find the focus of the parabola x^2=4y

Find the focus, vertex, equation of the directrix and the axis of the parabola x = y^2- 2y + 3 .

Statement-I The equation of the directrix circle to the hyperbola 5x^(2)-4y^(2)=20 is x^(2)+y^(2)=1 . Statement-II Directrix circle is the locus of the point of intersection of perpendicular tangents.