Graphs in Microsoft Excel typically chart time on the horizontal axis. Time is the independent variable in most relationships and dependent variables appear on the vertical axis. Some charts, though, ...

Microsoft Excel charts give you a large number of options for displaying the data in your spreadsheet. Sometimes, it is useful and informative to plot two different sets of data on the same chart, ...

If you understand the definition of a mathematical function, a good way to judge it is that any line drawn parallel to the y-axis intersects with the values in the function’s curve only once. The same ...