RP.2d

The ordered pairs show equal amounts of money in U.S. dollars and euros. What other ordered pair on this graph would show the unit rate? What does the ordered pair represent in this situation?

• (1, 0.78); 0.78 dollar equals 1 euro.

• (1, 0.78); 0.78 euro equals 1 dollar.

• (1, 1.28); 1.28 dollars equals 1 euro.

• (1, 78); 78 euros equals 1 dollar.

The graph below shows the relationship between the time in hours and the area mowed in acres. What point means mowing 8 acres in 5 hours?

• (0, 0)

• (1, 1.6)

• (5, 8)

• (8, 5)

The graph below shows the relationship between the number of dogs and the number of cats. What does the point (9, 36) represent?

• There are 9 dogs when there are 9 cats.

• There are 36 cats when there are 9 dogs.

• There are 36 dogs when there are 36 cats.

• There are 36 dogs when there are 36 cats.

Select all correct answers. Each of the following points is on a graph of a proportional relationship. Which of the following points are on a line with a unit rate that is less than 1?

• (1, 2)

• (1, 1)

• (1, 0.5)

• (1, 20)

• (1, 0.1)

The graph below shows the relationship between the number of theater tickets bought and the cost. What is the ordered pair that has an x-coordinate of 1?

(a)  

The graph below shows the proportional relationship between the number of square yards of fabric and the cost in dollars. Does the line going through the point (0, 0) make sense? Choose all that apply.

• There can't be 0 yards of fabric.

• No, it is not a proportional relationship

• Yes, the relationship is proportional

• If there is 0 yards of fabric then it costs $0.

Kim is running in a race. The number of miles she runs, x, and the number of minutes it takes to run them, y, are in a proportional relationship.

If she runs 3 miles in 24 minutes, determine the equation that represents the number of minutes per mile that she runs.

(a)  

Which relationship(s) below could be represented by the graph? Choose all that apply.

• A baby elephant weighs 240 pounds after 4 weeks.

• Felicia earned $120 babysitting for 4 hours.

• Tim drove 60 miles in one hour.

• Elaine read 120 pages in one hour.