Question

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

Step1: Identify parabola symmetry

The graph is a parabola opening downward, symmetric about a vertical line.

Step2: Find vertex x-coordinate

The vertex (highest point) is at $x=0$.

Step3: Axis of symmetry equation

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

Answer:

$x = 0$