Proportional Relationships

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

• $8 per pound
• $5 per pound
• $35 per pound
• 0.125 pounds per dollar

A store sees 120 customers in 8 hours. What is the unit rate (in customers per hour)?

• 16 customers per hour
• 15 customers per hour
• 12 customers per hour
• 20 customers per hour

If Justin can type 408 words in 4 minutes, how many words can he type per minute?

• 102 words per minute
• 100 words per minute
• 400 words per minute
• 412 words per minute

I paid $15.00 for 6 gallons of gasoline.
What was the price PER gallon?

• $0.40
• $9.00
• $2.50
• $0.90

Find the unit rate.

18 orders in 3 days = ________ orders per day

• 5

• 6

• 7

• 8

Find the unit rate.

44 stamps on 4 sheets = _________ stamps per sheet

• 11

• 12

• 8

• 10

What is the constant of proportionality? 

• 1/3
• 3
• 5
• 10

Is the given table a proportional relationship? If so, what is the constant?

• Yes; 1/3
• Yes; 3
• Yes; 5
• No

Is this table proportional or non-proportional?

• Yes

• No

What is the constant of proportionality?

• $3
• $4
• $2
• $9