The equation of the parabola having focus at 0,-3 and directrix y=3

Focus 0,-3 and directrix y=3Since, the focus lies on the y-axis, it is the axis of parabolaAlso, the directrix y=3 in the above the x-  axis, while the focus 0,-3i  is below x-  axishence, the parabola is of the form x2=4ay  Here a = 3  Therefore, the equation of the required parabola is x2=12y