How to Graph a Function in Excel. A mathematical function is a formula that takes an input, x, applies a set of calculations to it, and produces an output called y. By calculating a function at a ...

The function simply works around the horizontal and vertical axis to form the graph. Drawing a Circle If pinpoint accuracy is not important, you can simply draw a curve shape to create a graph.

You can also choose a 3-D chart to add some aesthetic texture to the graph. These different graph options are relatively easy to create in Excel when you're looking to visually represent a data range.