Identifying Proportional Relationships (tables)

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other is constant.

Front

How do you find the unit price?

Back

To find the unit price, divide the total price by the number of units (e.g., price per ounce).

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity of one.

Front

If Cheerios cost $3.68 for 17 oz, what is the unit price?

Back

$0.216 per ounce.

Front

If Apple Jacks cost $2.89 for 13 oz, what is the unit price?

Back

$0.222 per ounce.

Front

Which is the better deal: Cheerios or Apple Jacks?

Back

Cheerios, because it has a lower unit price.

Front

What does it mean if a graph is proportional?

Back

A proportional graph passes through the origin (0,0) and shows a constant ratio between the x and y values.

Front

How can you tell if a table shows a proportional relationship?

Back

If the ratios of corresponding values are constant, the relationship is proportional.

Front

What is the unit rate of 90 miles in 2 hours?

Back

45 miles per hour.

Front

What is the unit rate of $9 for 3 items?

Back

$3 per item.