How to Draw a 2-D Function, Step - By - Step

Here we review two methods of graphing functions in the plane. We will use the function f(x) = -x² + 2x + 3 as an example.

Step 1: Draw x and y axes.

If you want to quickly sketch your function, click here for the less accurate yet faster method of point plotting.

If you want to draw your function with complete precision, click here for the critical point method.