3. A video streaming service charges for each device that streams movies plus a yearly
fee, as shown by the graph below.
Flixstream Prices
Total Charge
(in dollars)
70
60
50
40
30
10
0
5
1 2
3 4
Number of Devices
Streaming Movies
What is the slope of the line graphed
above?
A. 15
B. 20
C. 30
D. 50
4. What does the slope of the graph
represent?
A. the cost for each streaming movie
B. the cost per hour of streaming
C. the cost for a yearly subscription
D. the cost for each device streaming
movies