Paul Dawkins
Paul's Online Notes: Algebra: Graphing Functions
Detailed math tutorial features notes and examples that take a look at graphing functions including several examples of graphing piecewise functions.
Paul Dawkins
Paul's Online Notes: Algebra: Transformations
Detailed math tutorial features notes and examples that take a look at vertical and horizontal shifts of graphs as well as reflections of graphs about the x and y-axis, often called transformations.