Find the equation of the parabola whose focus is at (0, 0) and vertex is at the intersection of the line `x+y=1 and x-y=3`.

Find the equation of the parabola whose focus is (3, 0) and vertex is (0, 0) .

Find the equation of the parabola whose focus is (3, 0) and vertex is (0, 0) .

Find the equation of the parabola whose focus is (0,0) and the vertex is the point of intersection of the lines x+y=1 and x - y = 3.

Find the equation of the parabola whose focus is (0,-3) and directrix is y=3

Find the equation of the parabola whose focus is (0,0) and the vertex is the point to of intersection of the lines x+y=1 and x-y=3.

Find the equation of a parabola whose focus is (1,2) and directrix is the line x+y=0.

Find the equation of the parabola whose focus is (1,1) and tangent at the vertex is x+y=1

Find the equation of the parabola whose: focus is (0,0) and the directrix 2x-y-1=0

Find the equation of the parabola whose: focus is (0,0) and the directrix 2x-y-1=0

Find the equation of the parabola whose: focus is (3,0) and the directrix is 3x+4y=1