Use the graph to determine which statement is true. a. the unit rate for the amount of water dispensed is 9 liters per minute. b. point a is the origin. c. in 35 min, 5 looters of water are dispensed to the crops. d. the line graph passes through the origin; therefore, it models a proportional relationship.

The correct option is d.

Step-by-step explanation:

From the graph it is noticed that the line passing through origin and point A. The coordinates of point A is (5,35).

The coordinates of origin is (0,0).

Slope formula,

Slope of the line is,

Therefore, the amount of water increase 7 liters per minute. So the option A is incorrect.

Point A is not the origin therefore the option b is incorrect.

The x-axis represent the time and the y-axis represents the water in liters therefore the point A(5,35) represents 35 liters of water at 5 minutes. So the option c is incorrect.

Since the line graph passes through the origin therefore the x and y has proportional relationship. Therefore the option d is correct.