Proportional Relationships Quiz

Which of the following represents a proportional relationship?

• The relationship between the number of apples and their weight

• The relationship between the number of pages in a book and the book's weight

• The relationship between the number of cars in a parking lot and the color of the cars

• The relationship between the number of hours worked and the amount of pay at a constant hourly rate

A recipe calls for 2 cups of flour to make 12 cookies. How many cups of flour are needed to make 30 cookies?

• 3 cups

• 4 cups

• 5 cups

• 6 cups

On a graph, how would you know if a relationship is proportional?

• The line passes through the origin (0,0).

• The line is a curve.

• The line is horizontal.

• The line is vertical.

If 8 gallons of paint can cover 320 square feet, how many gallons are needed to cover 400 square feet?

• 9 gallons

• 10 gallons

• 11 gallons

• 12 gallons

Write the equation that represents the proportional relationship between x and y if 3x = y.

A car travels 150 miles in 3 hours. At this rate, how far will the car travel in 5 hours?

• 200 miles

• 250 miles

• 300 miles

• 350 miles

Which of the following is NOT a proportional relationship?

• The relationship between the diameter and the circumference of a circle

• The relationship between the number of books read and the total number of pages

• The relationship between the temperature in Celsius and Fahrenheit

• The relationship between the age of a car and its value

• 2

• 3

• 4

• 5

A graph showing the relationship between the number of weeks and the amount of money saved at a constant rate passes through the points (1, 50) and (3, 150). What is the weekly savings rate?

• $50 per week

• $75 per week

• $100 per week

• $150 per week

If 5 pounds of potatoes cost $10, how much do 8 pounds cost?

• $12

• $16

• $20

• $24