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 tell if a table represents a proportional relationship?

Back

A table represents a proportional relationship if the ratios of the corresponding values are equal.

Front

What does the ordered pair (x, y) represent in a proportional relationship?

Back

In a proportional relationship, (x, y) represents the quantities where y is proportional to x.

Front

If a job pays $56 for 8 hours of work, how do you find the pay per hour?

Back

Divide the total pay by the number of hours: $56 ÷ 8 hours = $7 per hour.

Front

What is the constant of proportionality?

Back

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

Front

If a graph is proportional, what does it look like?

Back

A proportional graph is a straight line that passes through the origin (0,0).

Front

What does it mean if a graph is not proportional?

Back

If a graph is not proportional, it does not represent a constant ratio between the two quantities.

Front

How do you calculate the total pay for a different number of hours worked?

Back

Multiply the pay per hour by the number of hours worked.

Front

If Perry earned $96 for 8 driveways, how much does he earn per driveway?

Back

To find the pay per driveway, divide $96 by 8 driveways: $96 ÷ 8 = $12 per driveway.

Front

What is an example of a proportional relationship in real life?

Back

An example is the relationship between distance and time when traveling at a constant speed.