You want to be able to see the grid lines behind the square. Use the gray gridlines to graph your parabola, or draw your own horizontal and vertical lines inside the square.

How to Change Grid Line Colors on a Chart With Microsoft Excel. Grid lines add horizontal and/or vertical lines to your graph that aid in measuring graph values. By default, these grid lines use ...

If you need to create a Line Chart and Scatter Plot in Excel, read through this article. We have also explained which one is right for you.

You can make a curved graph in Excel and Google Sheets using this tutorial. Learn how to convert sharp edges into smooth lines in a spreadsheet graph.

Drawing and interpreting graphs and charts is a skill used in many subjects. Learn how to do this in science with BBC Bitesize. For students between the ages of 11 and 14.