Quadratic Functions

General Quadratic Functions On-line Notes:

ASU First Year Math Quadratic Functions lecture notes

Additional Quadratic Functions On-line Resources:

Quadratic Functions - Parabolas
Quadratic Functions
College Algebra Tutorial on Graphs of Quadratic Functions
Quadratic Functions (note that the symbol ¥ means infinity in this page)
BBC Education - AS Guru - Maths - Methods - Algebra - Quadratic Functions
Quadratic Functions - graphs
MathHelp Glossary Keyword: Quadratic (don't miss the link at the bottom to MathHelp Notebook on quadratic equations)
Technical Mathematics 1: Quadratic Functions and Equations
Purplemath - Your Algebra Resource: Completing the Square: Vertices
Purplemath - Your Algebra Resource: Solving Quadratic Equations - I

Applications of Quadratic On-line Notes:

ASU First Year Math Applications of Quadratic Functions lecture notes

Additional Applications of Quadratic Functions On-line Resources:

Quadratic Polynomial Functions Homework:

The Quadratic Polynomial Functions Homework contains 7 problems.
Things to remember:

There are two ways to algebraically find the vertex of a quadratic function -- completing the square and using the formula.
When you are asked to find the maximum value of a quadratic function, you are being asked for the y-value of the vertex.
When being asked to find the quadratic function with given the vertex and a point on the graph, you use the vertex to start the process. You use the point on the graph to find out the value of the leading coefficient a in the vertex form of the equation.
Intercepts are points and must be written as ordered pairs (x-intercepts look like (x, 0) and y-intercepts look like (0, y)).
When solving problem 6, draw a picture and remember that the area of a rectangle is found by multiplying the length and the width.
The quadratic regression problem (Homework_10-also-recommended problem 5) will require your calculator. Click here for information about how to use your graphing calculator.

Homework examples:

Example 1: similar to problem 2
Example 2: similar to problem 3
Example 3: can help with problem 4

also-recommended Homework examples:

Example 4: similar to problem 4

Keep in mind that it is recommended that you also complete all the problems in the set called "also recommended" with the same number as the Quadratic Polynomial Functions Homework. There are many different ways to ask the same questions. This will allow you to see additional problems that are related to this topic.