The following components are essential (p11)
- Table of 3 points (3-point plot)
- Determine the "domain" and "range": the maximum and minimum values of the x (horizontal) and y (vertical) axis
- Scale of the graph
- Plotting the points and drawing a straight line that passes through the points
A good scale of the graph is when the domain and range covers 2/3 to 3/4 of the graph paper.