Learn how to calculate the equation of a line from a graph, work out the gradient from an equation, and visualise intercepts with this step-by step guide.

How to Find the Slope of a Line on an Excel Graph. In math and statistics, you may occasionally need to calculate the slope of a line generated by coordinates in the (x,y) format.

Open the Excel workbook that contains the chart whose trend-line equation you want to access. Press "Alt-F11" to open Excel's Visual Basic Editor.

When all appears well, you can save a screenshot of the graph directly to your page to revisit it later. So, let us see the way to draw graphs of an equation in Windows 10.

The top part of that image is the equation itself. The bottom part is a graph of the equation, which, as you can see, is exactly the same. To be fair, this equation cheats a little bit.