Proportional Relationships, Determine Unit Rates, and Find Missing Values

The graph shows the distance a plane travels. Use one of the points on the graph to reduce to the unit rate.

• 5 miles per minute

• 5 minutes per mile

• 10 minutes per mile

• 10 miles per minute

Look at the graph, which ordered pair represents the unit rate?

• (0, 0)

• (1, 0.75)

• (4, 3)

• (8, 6)

Which graph is proportional?

• A

• B

• C and D

• All of the graphs are proportional

A grocery store sells a 6-pack of water for $3.79, a 9-pack for $4.50 and a 12-pack for $6.89. What package costs the least per bottle?

• 6-pack

• 9-pack

• 12-pack

Dalila earns $108.75 for working 15 hours as a holiday helper. At this rate, how much money will she earn if she works 18 hours next week?

• $7.25

• $130.50

• $132.50

• Not enough information is given.

The middle school is planning a family movie night where popcorn will be served. The constant relationship between the number of people (n) and the number of cups of popcorn (p) is shown in the table. How many people can be served with 519 cups of popcorn?

• 173 people

• 180 people

• 240 people

• 130 people

A recipe for making 3 dozen muffins requires 1.5 cups of flour. At this rate, how many cups of flour are needed to make 5 dozen muffins?

• 60.25 cups

• 2.5 cups

• 10 cups

• 3.5 cups

Is this table proportional or non-proportional?

• Proportional

• Non-Proportional

What is the constant of proportionality?

• 8

• 16

• 24

• 2

Write an equation for this situation.

• y=9.75x

• y=19x

• y=19.25x

• y=9.5x