How to Make a Curved Graph on Excel. Microsoft Excel 2010 has the ability to smooth the line between data points on a graph to create a curved graph. However, you do not see this option when you ...

Step 2 – Create a table for the x and y values that you will calculate to plot the graph. Step 3 – Find the values for y. Start with x = -2. When x = -2, y = 0. Write this in the table.