Functions

What is a Function - A function is a set of mathematical operations performed on one or more inputs (variables) that results in an output.

Free Math Help: Functions - More help to understand functions in mathematics.

Functions - Functions lessons with lots of worked examples and practice problems.

Unit Circle - The Unit Circle is a circle with a radius of 1. Being so simple, it is a great way to learn and talk about lengths and angles.

Linear, Quadratic and Exponential Models - A collection of tutorials to help you understand these models.