Proportional Relationships

Front

What is a proportional relationship?

Back

A relationship between two quantities where the ratio of one quantity to the other is constant.

Front

If a bicycle originally costs $324 and is marked down by 1/3, what is the sale price?

Back

$216

Front

What does it mean if two quantities are not proportional?

Back

It means the ratio between the two quantities is not constant.

Front

Jasmin uses 1/4 cup of water for every 1/2 cup of flour. How much flour is needed for 1.5 cups of water?

Back

3 cups of flour

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity per 1 unit of another quantity.

Front

What is the unit rate for 120 miles in 2 hours?

Back

60 miles/1 hour

Front

How do you determine if two ratios are proportional?

Back

Two ratios are proportional if their cross products are equal.

Front

If a recipe calls for 2 cups of sugar for every 5 cups of flour, what is the ratio of sugar to flour?

Back

2:5

Front

What is the formula for finding the sale price after a discount?

Back

Sale Price = Original Price - (Discount Rate × Original Price)