Overview
              In science, we use equations as a tool for showing a relationship between two or more entities. Using equations allows us to create a graphic of those relationships. This graphic is known as a graph and the importance of graphing cannot be overstated. Graphs are used as a tool to observe correlations between various experimental parameters.
          Objectives
              Upon completion of this exercise, you will be able to:
- Recognize the purpose of graphing lines
 - Describe how to find the slope of a line
 - Explain the equation of a line
 - Perform basic calculations to find the slope and intercepts