Question

Match the equation to the correct graph:

[(((x + 2)^2)/16) + (((y + 1)^2)/1)

The answer is a graph with:
Center: (2, -1)
Vertices: (2, 0) and (2, -2)
Co-Vertices: (-2, -1) and (6, - 1)

How do I work the equation to come to those conclusions?

A quick representation of the graph is below.