Question

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

Explanation:

Step1: Identify parabola's property

For a parabola, the axis of symmetry passes through its vertex.

Step2: Locate vertex

The vertex of the given parabola is at the point $(0,0)$. For a parabola opening upwards or downwards, the equation of the axis of symmetry is of the form $x = h$, where $(h,k)$ is the vertex. Here $h = 0$.

Answer:

$x = 0$