Axis of Symmetry of a Parabola (Jump to: Lecture | Video )

Parabola
A Parabola is an equation in the form:

Below we have a graph of a parabola, with an equation:

Figure 1.

To make things easier, we rewrite the parabola equation in standard form. Now we know where "a", "b", and "c" are.

Figure 2.

Axis of Symmetry of a Parabola
Axis of Symmetry of a Parabola is located at:

Next, we can locate the Axis of Symmetry:

Figure 3.

The Axis of Symmetry is located at x = 0. It is graphed below:

Figure 4.