A parabola has a focus (0,-1) and directrix y=1. What is the standard equation?

Figure formed when a plane intersects a double right circular cone.

A plane curve  formed when the plane intersects only one cone to form an unbounded curve

The line segment that passes through the focus of a parabola parallel to the directrix with endpoints on the parabola.

The fixed point in the interior of a parabola that lies in the axis of symmetry is the focus?

The set of all points in a plane such that its distance  from a fixed line is equal to the distance from a fixed point that is not on the fixed line.