Learn how to plot coordinates and create straight line graphs to show the relationship between two variables. Also, plot graphs that contain a negative coefficient of x.

The graph utilizes a linear regression to generate a line of best fit to plot the relationship between a firm's productivity and expenses.

Then the last two commands in plotting your data are to make the time series the object, then to plot the graph itself: ...

DataStax scored a $106M funding pay day last September, and today it announced it was using some of that money to acquire open source graph database ...