Unit 3- Non-proportional relationships review

The cost of popcorn is $2.50 for each bag. Does this represent a proportional or non-proportional relationship?

• Proportional
• Nonproportional

What is the constant of proportionality?

• 8
• 16
• 24
• 2

Is the graph proportional or non-proportional?

• Proportional
• Non-Proportional

Which graph is proportional?

• A and C

• B only

• C and D
• All are proportional

Write an equation for this situation.

• y = 19.25 + x

• x = y + 19.25

• x=19.25y

• y = 19.25x

Fred is ordering pies for a family reunion. Each pie costs $4.50. For orders smaller than a dozen pies, there is a $5 delivery charge. Is the cost proportional to the number of pies ordered? (Use a table of value to help you solve.)

• Proportional

• Nonproportional

• A

• B

• C

• D

A mail carrier travels at 15 miles per hour through a neighborhood. Which table represents the distance the mail carrier travels in x hours?

• 
• 
• 
• 

Find the unit rate:  $3.60 for 3 pounds of apples. How much does it cost for 1 pound of apples?

• $1.00 per pound
• $3.60 per pound
• $1.20 per pound
• $1.10 per pound

Does this equation represent a proportional relationship?

• Yes

• No