Chapter 2 Test Review: 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 can you determine if a table of values is proportional?

Back

A table of values is proportional if the ratios of corresponding values are equal.

Front

What is the constant of proportionality (k)?

Back

The constant of proportionality (k) is the constant ratio between two proportional quantities.

Front

How do you find the constant of proportionality from a table?

Back

To find the constant of proportionality, divide the value of one quantity by the corresponding value of the other quantity.

Front

What is the equation of a proportional relationship?

Back

The equation of a proportional relationship is y = kx, where k is the constant of proportionality.

Front

If k = 9, what is the equation of the proportional relationship?

Back

The equation is y = 9x.

Front

What does the unit rate represent in a proportional relationship?

Back

The unit rate represents the constant of proportionality and shows how much one quantity changes for each unit of the other quantity.

Front

If a table shows values (2, 6), (4, 12), (6, 18), is it proportional?

Back

Yes, it is proportional because the ratios (2/6, 4/12, 6/18) are all equal to 1/3.

Front

What is an example of a non-proportional relationship?

Back

An example of a non-proportional relationship is a table where the ratios of corresponding values are not constant, such as (1, 2), (2, 5), (3, 7).

Front

How do you find the unit rate from a proportional relationship?

Back

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