The scatterplot shows the average price of a movie ticket, y, over the last 20 years.
10
(20, 8.40)
*(12, 6.80)
Average Ticket Price ($)
.(3, 5.00)
(0, 4.40)
O2 6 8 10 12 14 16 18 20
Elapsed Number of Years
The rate of change
of the cost of a
ticket with respect
to elapsed number
of years is $
per year.