Ratios, Rates, Unit Rates

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, showing how many times one value contains or is contained within the other.

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two different units, such as miles per hour or price per item.

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is one unit, allowing for easy comparison of different rates.

Front

How do you determine if a table represents a proportional relationship?

Back

A table represents a proportional relationship if all ratios reduce to the same unit rate.

Front

If Mrs. Darling drives 280 miles in 4 hours, what is her unit rate in miles per hour?

Back

70 miles per hour.

Front

How do you find the cost of one item when given the total cost for multiple items?

Back

Divide the total cost by the number of items.

Front

If 18 bottles of Gatorade cost $9.36, what is the cost of one bottle?

Back

$0.52.

Front

What indicates a proportional relationship on a graph?

Back

A proportional relationship is indicated by a straight line that passes through the origin.

Front

What does it mean if a graph is straight but does not go through the origin?

Back

It means the relationship is not proportional.

Front

What is the formula to calculate a unit rate?

Back

Unit Rate = Total Quantity / Number of Units.