Create a Curve Graph Open a new workbook and label the first column as X for the horizontal axis and the second column as Y for the vertical axis.

For example, you could show line graphs for temperature and humidity on top of each other. For this purpose, Excel lets you add a series of data to a chart and plot it on a second y-axis.

Learn how to create a Combination Chart in Microsoft Excel. We also show you how to to combine bar and line graph & create Custom Combo Chart.