At the West Texas Balloon Festival, a hot air balloon is sighted at an altitude of 800 feet. It appears to be
descending at a steady rate of 20 feet per minute.
Spectators wonder how the altitude of the balloon is
changing ing as time passes.
1. Write a function rule (equation) to represent the
relationship between the two variables in this scenario.
(box 1)
2. What do the x values in this equation represent?
(box 2)
3. What do the y values in this equation represent?
(box 2)