# Intro to Linear Functions

A function assigns each input value to one particular output value. Most linear equations are represented by functions. If so, we can express a linear equation y=mx+b using function notation as f(x)=mx+b.

A function assigns each input value to one particular output value. Most linear equations are represented by functions. If so, we can express a linear equation y=mx+b using function notation as f(x)=mx+b.