1. Quadratic Functions Extreme Values and Graphs
Honors Algebra II with Trigonometry
February 7-8, 2013
Mrs. Agnew

2. Essential Question Essential Vocabulary
How do you graph quadratic functions?
Essential Vocabulary
Quadratic Function
Vertex
Extreme Value
Standard Form
Vertex Form

3. Quadratic Functions Standard Form: y = ax2 + bx + c
What is the graph of a quadratic function?
What is the vertex? The axis of symmetry?
The vertex and symmetry are important parts of the graph of a quadratic function.

4. Graphs of Quadratics Graphing quadratics from standard form…
Identify axis of symmetry: x = – b_ 2a
Identify vertex using axis of symmetry
Find a point on parabola and use symmetry to find another point (i.e., y-intercept)
Examples…

5. Homework: February 6
Textbook: Pages 6 –7 #21, 22, 23, 24, 25, 30, 31, (do not find the value)

6. Extreme Values
An extreme value is the largest or smallest y value for a given function.
Where is the extreme value for quadratics?
When asked to find a maximum or minimum value, always find the y coordinate of the vertex.
Examples…

7. Homework: February 7
-Extreme Values Worksheet Provided