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, ...

The X-axis, which is the horizontal axis, on most Excel charts does not use numeric intervals like the vertical Y-axis does. The X-axis contains either strings of text or a date under each set of data ...

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 ...