Question

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

Explanation:

Step1: Identify parabola vertex

The vertex of the parabola is at $(0, 6)$, visible on the graph as the highest point.

Step2: Find axis of symmetry

For a parabola, the axis of symmetry is the vertical line passing through its vertex, with equation $x = h$ where $h$ is the x-coordinate of the vertex.
<Expression>
$x = 0$
</Expression>

Answer:

$x=0$