Question

look at this graph:
what is the equation of the axis of symmetry?

Explanation:

Step1: Identify vertex x-coordinate

The parabola's vertex lies at $x=2$ (visible on the graph, the lowest point's horizontal position).

Step2: Axis of symmetry formula

For a parabola, the axis of symmetry is the vertical line through the vertex, given by $x = h$, where $h$ is the vertex's x-coordinate.
<Expression>
$x=2$
</Expression>

Answer:

$x=2$