Conic Sections Formulas
2
2
Equations of Parabola:
1) Parabola opens up: 4
vertex = , ; focus = , ; directrix:
2) Parabola opens down: 4
vertex = , ; focus = , ; directrix:
x h p y k
h k h k p y k p
x h p y k
h k h k p y k
2
2
3) Parabola opens right: 4
vertex = , ; focus = , ; directrix:
4) Parabola opens left: 4
vertex = , ; focus = , ; directrix:
p
y k p x h
h k h p k x hp
y k p x h
h k h p k x hp
