Proportional Relationships

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 determine if a table represents a proportional relationship?

Back

A table represents a proportional relationship if the ratios of the corresponding values are equal.

Front

What is the unit rate?

Back

The unit rate is the ratio of two measurements in which the second quantity is one unit.

Front

How do you find the unit rate from a given quantity?

Back

To find the unit rate, divide the total quantity by the number of units.

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant ratio in a proportional relationship.

Front

If 72 ounces serve 12 servings, what is the unit rate?

Back

6 ounces per serving.

Front

What does it mean if a table does not represent a proportional relationship?

Back

It means that the ratios of the corresponding values are not equal.

Front

If a relationship is not proportional, what can be said about the constant of proportionality?

Back

There is no constant of proportionality.

Front

What is the unit rate for 80 miles in 2 hours?

Back

40 miles in 1 hour.

Front

How can you identify a proportional relationship from a graph?

Back

A proportional relationship will show a straight line that passes through the origin.