Unit 4 Review (Proportional Relationships)

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It expresses how much of one quantity corresponds to one unit of another quantity.

Front

How do you calculate the unit rate?

Back

To calculate the unit rate, divide the total amount of one quantity by the total amount of the other quantity.

Front

What does it mean for a relationship to be proportional?

Back

A relationship is proportional if two quantities maintain a constant ratio or rate.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another.

Front

How do you express a ratio?

Back

A ratio can be expressed in three ways: as a fraction, with a colon (e.g., 2:3), or with the word 'to' (e.g., 2 to 3).

Front

What is the ratio of dogs to all pets if there are 2 dogs, 4 cats, and 5 hamsters?

Back

The ratio of dogs to all pets is 2:11.

Front

What does the point (2, 94) represent in a graph of savings over weeks?

Back

The point (2, 94) represents that after 2 weeks, they have saved $94.

Front

How do you determine if a graph is proportional?

Back

A graph is proportional if it passes through the origin (0,0) and forms a straight line.

Front

If a store has 120 customers in 6 hours, what is the unit rate in customers per hour?

Back

The unit rate is 20 customers per hour.

Front

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

Back

The unit rate is $8 per pound.