If you are using Google Sheets, you may be having some trouble finding how to insert a line. Once you have figured out how to insert it, getting it to be straight can be frustrating. Follow these easy steps to get it done.
Go to Insert, then Drawing.
From here, choose Line.
Now, here’s where the real trick comes in. If you want to draw a line, go ahead. But, if you want to draw a straight line, hold down the shift key while you draw! There it is, a straight line.