1. I CAN . . .
-identify the vertex and axis of symmetry of quadratic functions written in vertex form.
lesson 9.5

2. x-coordinate of vertex
vocabulary
Term
Definition/Formula
Vertex Form
Vertex
Max/Min
x-coordinate of vertex
Axis of Symmetry

3. Example 1:
What is the vertex and axis of symmetry for each quadratic function below?
a) vertex: _____________ AoS: _____________
b) vertex: _____________ AoS: _____________
c) vertex: _____________ AoS: _____________
d) vertex: _____________ AoS: _____________
e) vertex: _____________ AoS: _____________

4. Example 2: Use to answer the following questions.
What is the vertex: _______________________
What is the axis of symmetry? ___________________
Does it open up or down? ___________________
Is the vertex a max or min? __________________

5. Example 3:
Use and your answers above to graph a QUICK SKETCH of the function.

6. Example 4: Use to answer the following questions. Sketch it.
What is the vertex? ____________
What is the AoS? _____________
Does it open up or down? _________
Is the vertex a max or min? ________

7. Match the quadratic function with its vertex.
Are you a master??
Match the quadratic function with its vertex. a) b) c) d) e)

8. Today’s assignment
9.5 Worksheet