This is a one page handout that has students create their own design using line segments, then calculate slope, write equations, find x and y intercepts, and write the domain and range in interval notation. There is an example on the second page along with a grading rubric. This activity will take 1-2 class periods. It is highly adaptable. I left the file in Word 97-2002 format so you can tweak it for your needs.
This is practice finding the equation of a line given a graph, but doesn't have them graph from an equation.
I like this because it is one page and easy to grade.