Unit 3- Proportional Relationships Test Review

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

If y is directly proportional to x, what does this mean?

Back

It means that as x increases or decreases, y increases or decreases at a constant rate, and can be expressed as y = kx, where k is a constant.

Front

What is the equation of a proportional relationship if y = 15 when x = 3?

Back

y = 5x.

Front

How do you find the missing value in a proportional relationship table?

Back

You can use the constant ratio of the known values to find the missing value.

Front

If Jose swims 3 laps in 2 minutes, how long will it take him to swim 27 laps?

Back

It will take him 18 minutes.

Front

What is the constant of proportionality in the equation y = 4x?

Back

The constant of proportionality is 4.

Front

Which of the following represents a proportional relationship: y = x/2 + 1, y = 4x, y = 2x + 3?

Back

y = 4x represents a proportional relationship.

Front

What does it mean for two quantities to be directly proportional?

Back

It means that one quantity increases or decreases in direct relation to the other quantity.

Front

How can you determine if an equation represents a proportional relationship?

Back

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

Front

What is the missing value if the height of a model is proportional to the number of blocks used and the answer is 45?

Back

The missing value in the table is 45.