Proportional vs Non-Proportional

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 where the ratio of one quantity to another is not constant.

Front

What does it mean for a graph to be proportional?

Back

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

Front

What are the two requirements for a graph to be proportional?

Back

1. Must be a straight line. 2. Must go through the origin.

Front

If a relationship has a fixed starting fee plus a variable cost, is it proportional or non-proportional?

Back

Non-proportional.

Front

How can you identify a proportional relationship from a table of values?

Back

If the ratio of the values in the table is constant, then it represents a proportional relationship.

Front

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

Back

Earning $10 for every hour worked is a proportional relationship.

Front

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

Back

Paying a flat fee of $20 plus $5 for each additional item rented is a non-proportional relationship.

Front

What does it mean if a graph does not pass through the origin?

Back

It indicates that the relationship is non-proportional.

Front

Can a proportional relationship be represented by a curved line?

Back

No, a proportional relationship must be represented by a straight line.