Proportions and Ratios Test Review

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a to b' or a:b.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

What does it mean for a relationship to be proportional?

Back

A proportional relationship means that as one quantity changes, the other quantity changes at a constant rate, and the ratio between the two quantities remains the same.

Front

What does it mean for a relationship to be non-proportional?

Back

A non-proportional relationship means that the ratio between the two quantities is not constant, and as one quantity changes, the other does not change at a constant rate.

Front

If a vending machine charges $1.00 per snack, is this a proportional relationship?

Back

Yes, this is a proportional relationship because the cost increases at a constant rate with each snack purchased.

Front

If a strawberry patch charges $2.00 per pound plus a $4.00 entrance fee, is this a proportional relationship?

Back

No, this is a non-proportional relationship because the entrance fee creates a fixed cost that does not vary with the amount of strawberries picked.

Front

What is the ratio of hearts to all shapes if there are 9 hearts and 19 other shapes?

Back

The ratio of hearts to all shapes is 9:28.

Front

How do you find a missing value in a proportion?

Back

To find a missing value in a proportion, you can cross-multiply and solve for the unknown.

Front

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

Back

An example of a proportional relationship is the cost of gas, where the price per gallon remains constant regardless of how many gallons you buy.

Front

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

Back

An example of a non-proportional relationship is a cell phone plan that has a fixed monthly fee plus additional charges for extra data.