Revision
- General equation of a parabola:

- Coordinates of the vertex of a parabola:

- Axis of symmetry of the parabola:

Answer
We have the following parabola:

We can read the coordinates of the vertex and axis of symmetry from the equation of a parabola if we express its equation in the general form above. To do that we will "complete squares" in the following way:

Comparing this equation with the general equation of the parabola, we see that:

So the coordinates of the vertex are:

and the axis symmetry is:
