Ratios and Proportional Relationships

Find the Unit Rate.
405 rotations in 5 minutes   

• 81 rotations per minute
• 73 rotations per minute
• 18 rotations per minute
• 810 rotations in 10 minutes

Write the ratio as a fraction in simplest form.
15 girls to 6 boys   

• 5 to 2
• 5/3
• 3 to 5
• 5/2

Do the ratios form a proportion?

• Yes, they form a proportion.
• No, they do not form a proportion.

Do the ratios form a proportion?

• Yes, they form a proportion.
• No, they do not form a proportion.

Does the table represent a proportional relationship?

• Yes.
• No.

Does the table represent a proportional relationship?

• Yes.
• No.

Solve the proportion.

• k=5
• k=3.3333333
• k=60
• k=90

Name the constant of proportionality.

• 20
• 40
• 16
• 35

Name the constant of proportionality.

• 8
• 16
• 6
• 3

In a certain apartment building, the ratio of tenants to cars is 3:5. If there are 30 tenants, how many cars are there?

• 35
• 60
• 18
• 50