Answer:
- axis of symmetry: x = -3
- root: x = -3
Step-by-step explanation:
As indicated in the example shown, the axis of symmetry is the vertical line through the vertex. That is, its equation is ...
x = <x-coordinate of vertex>
Here, the x-coordinate of the vertex is -3, so the axis of symmetry is ...
x = -3
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The roots are the x-intercepts, the x-values where the graph touches or crosses the x-axis. When the graph only touches the x-axis, there is only one root. Here, the x-value of the point where the graph touches the x-axis is x = -3.
The root is x = -3.
