1st Nine Weeks Cumulative Review (Calculator)

Six cell phones weigh 46.2 ounces. Fourteen cell phones weigh 107.8 ounces. Does this represent a proportional relationship? If so, what is the constant of proportionality?

• Yes, k = 7.7

• Yes, k = 0.12987

• No. They are not proportional.

The graph represents the admission cost for students. Use the graph to find the constant of proportionality. Write your answer in the form y = kx

• y = 2x

• y = 12x

• y = 6x

• x = 2y

• 45 mph

• 13 mph

• 40 mph

• 10 mph

Does this table represent a proportional relationship between x and y? If so, what is k?

• Yes, k = 3.5

• Yes, k = -3.5

• Yes, k = 0.2857

• No. The table does not represent a proportional relationship.

Which of these tables does NOT represent a proportional relationship?

• A

• B

• C

• D

Each year, the students in seventh grade go to an environmental camp. This year, the total cost is $1,580 for 79 students. How much does it cost for each student to attend the camp?

• $20 per student

• $200 per student

• $5 per student

• $0.05 per student

Which of the following represents the lowest speed in miles per hour?

A farm processes 6,000 gallons of milk every hour. Which equation represents the amount of milk, y, that the farm processes in x hours?

• y = 6,000 + x

• y = 6,000x

The table shows the relationship between the miles traveled for the hours biked. Is the relationship between the miles traveled and the hours biked proportional? If yes, what is k?

• Yes, k = 12

• Yes, k = 10

• Yes, k = 0.083

• No. The table does not show a proportional relationship.

Match the unit rate for each of the following rates.

• 36 mpg

• 77 miles per 2.2 gallons

• 34 mpg

• 194.25 miles per 5.25 gallons

• 37 mpg

• 66 miles per 2 gallons

• 33 mpg

• 153 miles per 4.25 gallons

• 35 mpg

• 119 miles per 3.5 gallons