Final answer:
In line graphs, the dependent variable is on the vertical axis, and independent on the horizontal. While graphing pages vs. cost, cost should be the dependent variable since it depends on the number of pages.
Step-by-step explanation:
Another name for Co-plots or Conditioning Plots is Trellis plots or Lattice graphs. These types of plots are useful in statistics for exploring the relationship between variables by creating separate graph panels for subsets of data. When creating a line graph, a dependent variable is typically plotted on the vertical axis, and an independent variable is plotted on the horizontal axis. For example, if you were to graph pages vs. cost, cost should be the dependent variable since it is likely to be affected by the number of pages, making pages the independent variable.
To plot the relationship between pages and cost using a line graph, one would label the horizontal axis with "Number of Pages" and the vertical axis with "Cost". Then, plot the data points on the graph and ensure both axes are appropriately scaled to reflect the range of values for each variable. This allows for a clear visual representation of how the cost varies with the number of pages.