Question

draw the parabolas axis of symmetry.

Explanation:

Step1: Identify vertex x-coordinate

The vertex of the parabola is at $x=-3$ (the peak of the curve).

Step2: Define axis of symmetry

The axis of symmetry is a vertical line through the vertex, with equation $x = h$ where $h$ is the vertex x-coordinate.
<Expression> $x = -3$ </Expression>

Answer:

The axis of symmetry is the vertical line $x=-3$ (a straight vertical line passing through $(-3, 0)$ on the x-axis, bisecting the parabola).