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 do you determine if a table of values is proportional?

Back

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

Front

What is the constant of proportionality (k)?

Back

The constant of proportionality (k) is the ratio of one quantity to another in a proportional relationship.

Front

If y = kx, what does k represent?

Back

In the equation y = kx, k represents the constant of proportionality.

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 table?

Back

To find the unit rate from a table, divide the value of one quantity by the corresponding value of the other quantity.

Front

If Craig earns $37 for 4 hours, what is his hourly rate?

Back

His hourly rate is $9.25.

Front

If a table shows (2, 6), (4, 12), and (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 does it mean if a relationship is not proportional?

Back

If a relationship is not proportional, the ratios of the quantities are not constant.

Front

How can you express a proportional relationship in an equation?

Back

A proportional relationship can be expressed as y = kx, where k is the constant of proportionality.