Proportional Relationships 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 is constant.

Front

How do you identify if two quantities are proportional?

Back

Two quantities are proportional if they can be expressed as a constant ratio, meaning that when one quantity changes, the other changes at a consistent rate.

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant value (k) that relates two proportional quantities, expressed as y = kx.

Front

If y = 3x, what is the constant of proportionality?

Back

The constant of proportionality is 3.

Front

What does it mean if a graph is a straight line through the origin?

Back

It indicates that the two quantities are in a proportional relationship.

Front

What is the formula for finding the constant of proportionality?

Back

The constant of proportionality (k) can be found using the formula k = y/x.

Front

If 5 toys cost $15, what is the cost per toy?

Back

The cost per toy is $3, which shows a proportional relationship.

Front

What is the relationship between ratios and proportions?

Back

Ratios compare two quantities, while proportions state that two ratios are equal.

Front

How can you determine if a table of values represents a proportional relationship?

Back

If the ratios of corresponding values are constant, then the table represents a proportional relationship.

Front

What is an example of a non-proportional relationship?

Back

A relationship where the ratio changes, such as a fixed cost plus a variable cost, is non-proportional.