Representing 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 quantity is constant.

Front

How can you identify a proportional relationship from a table?

Back

A proportional relationship can be identified if the ratios of corresponding values are equal.

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 a car travels 120 miles in 2 hours, what is the unit rate?

Back

60 miles per hour.

Front

What does it mean if two quantities are not proportional?

Back

It means that the ratio between the two quantities is not constant.

Front

How do you calculate the unit rate from a given rate?

Back

Divide the total quantity by the total time or other relevant quantity.

Front

If a person saves $50 in 2 months, what is their monthly saving rate?

Back

$25 per month.

Front

What is the unit rate if a runner completes 15 laps in 5 minutes?

Back

3 laps per minute.

Front

How can you express a proportional relationship using an equation?

Back

You can express it as y = kx, where k is the constant of proportionality.

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant value (k) that relates two proportional quantities.