Ratios and Proportional Relationships

What is the unit rate for the table below? (meters per second)

• 10

• 20

• 2

• 4

Does the table represent a proportional relationship?

• Yes.

• No.

Noah printed 24 photos in 8 minutes. How many photos did he print per minute?

• 6 photos/minute

• 3 minutes/photo

• 12 minutes/photo

• 3 photos/minute

A proportional relationship is a straight line that passes through the ______.

• x - axis

• y - axis

• origin

Shelley earns money walking dogs. How much does she earn for each dog she walks?

• 7

• 1

• 2

• 14

The relationship between number of heartbeats and time is shown. Which statement is not true?

• The unit rate is 2 beats per second.

• The line is straight.

• The graph shows a nonproportional relationship.

• The graph shows a proportional relationship.

Does this graph represent a proportional relationship?  

• No, because it doesn't pass through the origin.

• Yes, because it doesn't pass through the origin.

• Yes, because it intersects the y axis.

• No, because it intersects the x axis.

Melly eats 5 cookies in 1 day while Lola eats 10 cookies in 2 days. Do Melly and Lola have the same rate?

• No

• Yes

If there are 5 boys and 7 girls, write the ratio of girls to boys.

• 5 to 7

• 7 to 5

• 5 to 12

• 7 to 12

What is the ratio of red dots to total dots

• 6:5

• 5 to 6

• 5:11

• 11/5