The graph below shows the cost, in dollars, of filling a reusable jug with filtered water. What does the...

The graph below shows the cost, in dollars, of filling a reusable jug with filtered water.
What does the point (4, 1) on the graph represent?
A. It takes 4 jugs to fill 1 gallon of water.
B. Filtered water costs $4.00 per gallon.
C. The cost of 4 gallons of water is $1.00.
D. It takes 4 gallons of water to fill up 1 jug.
[Part of the introductory sentence is obscured.] The graph represents the volume of water in Susan’s watering can while she waters plants.
How much water is in Susan’s watering can when she starts watering her plants?
A. 1.8 liters
B. 3.0 liters
C. 3.7 liters
D. 5.5 liters
9. Which of the following is an example of a proportional relationship?
A. x | y: (1, 5), (2, 6), (3, 7)
B. x | y: (1, 6), (2, 12), (3, 18)
C. x | y: (1, 10), (2, 21), (3, 32)
D. x | y: (1, 4), (2, 7), (3, 10)
10. Which graph shows y and x in a proportional relationship?
A. [An increasing straight line that does not pass through the origin.]
B. [An increasing straight line that passes through the origin.]
C. [A vertical line to the right of the y-axis.]