We reviewed for the test.
Started with parabolas. (h, k) stands for the vertex. The x coordinate being h and the y coordinate being k. In alphabetical order, just like x, y.
The focus is a distance p from the vertex as is the directrix, in opposite directions. The focus is inside the parabola.
If rays of light hit a parabola, they go to the focus.
Also looked at ellipses and hyperbolas.