The distance p from the focus to the vertex is the same as the the distance from the vertex to the directrix. Combine all of the like terms and move them to one side of the equation. The vertex of the parabola is at hk.
For shift 2 units down.
Write the equation of a quadratic function with a vertex at -100 and a range of 02. Because the vertex appears in the standard form of the quadratic function this form is also known as the vertex form of a quadratic function. For shift 2 units down. Substitute 2 for a -1 for b and -1 for cin the quadratic formula andsimplify.