A linear equation is drawn as a straight line on a set of axes. To draw the graph we need coordinates. We generate these coordinates by substituting values into the linear equation. STEP 1 - Draw ...

If an equation can be rearranged into the form y = m x + c, then its graph will be a straight line. In the above: x + y = 3 can be rearranged as y = 3 x (which can be re-written as y = x + 3).

You can make a line graph in Excel in a matter of seconds using data already entered into the spreadsheet.