Find the equation of the parabola whose vertex is at the origin and directrix is the line `y-4=0`

Find the equation of the parabola whose focus is at the origin, and whose directrix is the line y-x=4 .Find also the length of the latus rectum, the equation of the axis, and the coordinates of the vertex.

Find the equation of the parabola whose vertex is the point (-2,3) and directrix is the line x + 7 = 0

Find the equation of a parabola with vertex at the origin and the directrix,y=2

Find the equation of a parabola with vertex at the origin and the directrix, y=2.

Equation of parabola with vertex at the origin and directrix y+3=0 , is

Find the equation of the parabola whose vertex is (0,0) and directrix is the line x+3

The equation of the parabola with vertex at origin and directrix the line y + 3 = 0 is

Find the equation of the parabola whose vertex is (0,0) and directrix is the line x + 3 = 0 .

Find the equation of the parabola with vertex at the origin and focus at (-4,0)

Equation of the parabola with vertex at the origin and directrix x+8=0 is _____.