| (y – k)2 = 4a(x – h) | (y – k)2 = – 4a(x – h) |
|---|---|
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| Focus = (h + a, k) | Focus = (h – a, k) |
| Eqn. of the directrix x – h + a = 0 | Eqn. of the directrix x – h – a = 0 |
| Axis of the parabola y – k = 0 | Axis of the parabola y – k = 0 |
| Vertex = (h, k) | Vertex = (h, k) |