McGraw Hill Integrated II, 2012
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McGraw Hill Integrated II, 2012 View details
1. Graphing Quadratic Functions
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Exercise 6 Page 99

The axis of symmetry is the vertical line through the vertex.

Vertex: (- 2,- 3)
Axis of Symmetry: x=- 2
y-intercept: 1

Practice makes perfect

To identify the vertex, axis of symmetry, and the y-intercept of the given parabola, let's start by labeling these features on our graph.

We can see above that the vertex is the point ( - 2, - 3). We can see that the y-intercept of the graph is 1. Finally, the axis of symmetry is the vertical line through the vertex. In this case, the equation for the axis of symmetry is x= - 2.