Line is Positive, Negative, Infinite or Zero

Complete the two questions for this practice. Please write your answers on a piece of scrap paper. When you are done, check your answers with the solution provided.

- In the figure below, which line(s)
(R, S, or T) has a positive slope? Which one(s) has a negative
slope?
- In the graphs below (a through f), which contain(s) a line with a positive slope? A negative slope? Slope of zero? Infinite slope?

[solution to practice]