Question

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

Explanation:

Step1: Identify vertex x - coordinate

For a parabola, the axis of symmetry passes through the vertex. By observing the graph, the x - coordinate of the vertex is 2.5.

Step2: Write axis - of - symmetry equation

The equation of the axis of symmetry of a parabola is of the form $x = a$, where $a$ is the x - coordinate of the vertex. So the equation is $x=2.5$.

Answer:

$x = 2.5$