Question

using the graph, determine the equation of the axis of symmetry.

Explanation:

Step1: Identify vertex x-coordinate

The vertex of the parabola is at $x=-3$, which is the midpoint of the parabola's symmetric sides.

Step2: Write axis of symmetry equation

The axis of symmetry of a parabola is the vertical line through its vertex, with the form $x = h$ where $h$ is the vertex's x-coordinate.

Answer:

$x=-3$