Question

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

Step1: Identify vertex x-coordinate

The vertex of the parabola is at $x=2$.

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.

Answer:

$x=2$