Question

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

Explanation:

Step1: Identify parabola symmetry axis

The parabola is symmetric about the vertical line passing through its vertex.

Step2: Locate vertex x-coordinate

The vertex of the parabola lies on the y-axis, so its x-coordinate is 0.

Step3: Write symmetry axis equation

The vertical line through $x=0$ is the axis of symmetry.

Answer:

$x=0$