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

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

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: _____________

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? __________________

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

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? ________

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

Today’s assignment 9.5 Worksheet