Linear Functions

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Assorted 3D Linear Function Examples

Linear functions are functions that have x as the input variable, and x is raised only to the first power. Such functions look like the ones in the above graphic. Notice that x is raised to the power of 1 in each equation.

Functions such as these yield graphs that are straight lines, and, thus, the name linear. Linear functions come in three main forms. An explanation and Java animated graphing applet is available for each by clicking the links below.

Slope-Intercept Form

Point-Slope Form

General Form

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