What is the graph of
How can you use the axis of symmetry?
The entire curve on one side of the axis is the mirror image of the curve on the other side.
Step 2 The axis of symmetry is
Lightly sketch the line
Step 3 The x-coordinate of the vertex is also
The y-coordinate is
Plot the vertex
What is the vertex form of
How do you find h, k, and a?
Find the vertex. This gives you h and k. The value for a is the same in both forms.
The vertex is
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Write the vertex form. |
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Substitute
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Simplify. |
The vertex form is