Writing and Graphing Linear Functions: Introduction

y = x  + 1

In this section we will be writing the equations of linear functions and graphing these linear functions. Linear functions are part of our day to day lives. Linear functions are used in economics to calculate cost, revenue, and profit. They can be used when comparing calling rates for cell phone companies. Linear functions are used to convert temperatures between Fahrenheit and Celsius. Can you think of any other possible uses of linear functions? Keep this question in mind as we go through this section.