1. Graphing Quadratic Functions
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The axis of symmetry is the vertical line through the vertex.
Vertex: (0,- 4)
Axis of Symmetry: x=0
y-intercept: - 4
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 ( 0, - 4). We can see that the y-intercept of the graph is - 4. Finally, the axis of symmetry is the vertical line through the vertex. In this case, the equation for the axis of symmetry is x= 0.