11/25 Proportionality Flashcard Practice

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 can you identify a proportional relationship in an equation?

Back

An equation represents a proportional relationship if it can be written in the form y = kx, where k is a constant.

Front

What does it mean if an equation does not represent a proportional relationship?

Back

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

Front

What is the unit rate?

Back

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

Front

How do you find the unit rate from a total amount?

Back

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

Front

What is the difference between proportional and non-proportional relationships?

Back

Proportional relationships have a constant ratio, while non-proportional relationships do not.

Front

What is an example of a non-proportional relationship?

Back

A video game rental fee that includes a one-time fee plus a daily rate is non-proportional.

Front

If a table shows values that double, what type of relationship is it?

Back

It shows a proportional relationship.

Front

What is the equation for a proportional relationship if the constant of proportionality is 3?

Back

y = 3x.

Front

How do you determine if a relationship is proportional from a graph?

Back

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