Step-by-step explanation:
step 1. The asymptote are x = 1 and y = 2 as far as I can tell from your graph.
step 2. the x = 1 asymptote creates an (x - 1) in the denominator.
step 3. the y = 2 asymptote creates a 2x in the numerator.
step 4. so y = 2x/(x - 1).
There is no slope the y axis is the same in both
His average speed is 40mph you get your answer by dividing 80 by 2, or or you could do what is half of 80 which is 40. So Mr.Campbell average speed is 40mph