Proportional & Non-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

What is a non-proportional relationship?

Back

A non-proportional relationship is a relationship between two quantities where the ratio is not constant.

Front

How can you identify a proportional graph?

Back

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

Front

How can you identify a non-proportional graph?

Back

A non-proportional graph does not pass through the origin and may curve or be a straight line that does not start at (0,0).

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

Back

$9.25 per hour.

Front

Write an equation for a proportional relationship where y is the total earnings and x is the hours worked, if the constant of proportionality is $9.25.

Back

y = 9.25x.

Front

What does it mean if a graph is non-proportional?

Back

It means that the relationship between the two quantities does not maintain a constant ratio.

Front

If a graph shows a straight line that does not pass through the origin, is it proportional or non-proportional?

Back

Non-proportional.

Front

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

Back

If you buy 2 apples for $2, then 4 apples for $4, the relationship is proportional.