1. Interpreting Key Features of Quadratic Functions (2.2.1)
October 6th, 2016

2. Vocabulary
Increasing: The interval of a function for which the output values are getting larger as the input values get larger.
Decreasing: The interval the a function for which the output values are getting smaller as the input values get larger.
Concave up: Arched upward (which results in a quadratic function having a minimum).
Concave down: Arched downward (which results in quadratic function having a maximum).
Inflection point: The point where a graph switches it’s concavity.

3. End Behavior: The behavior of a graph as x approaches positive and negative infinity.
Odd Function: A function such that , results in a graph that is symmetric about the origin.
Even Function: A function such that , results in a graph that is symmetric about the y-axis.

4. Ex. 1: For the following function, graph the function in order to answer the following questions.
a) What are the x-values for which the function is increasing? Decreasing?
b) What is the maximum or minimum value of a function?
c) What are the intercepts?
d) Is the function even, odd, or neither?

5. Ex. 2: A function has a minimum value of -8 and x-intercepts of -2
Ex. 2: A function has a minimum value of -8 and x-intercepts of -2.3 and 7.9. What is the value of x that minimizes the function? For what values of x is the function increasing? Decreasing?

6. Extra Practice