Lesson 7 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 quantity is constant.

Front

How do you determine if two quantities are proportional?

Back

Two quantities are proportional if they can be expressed as equivalent fractions or if their ratios remain constant.

Front

What is the formula for finding the unit rate?

Back

The unit rate is found by dividing the total quantity by the number of units, expressed as: Unit Rate = Total Quantity / Number of Units.

Front

What does it mean to compare rates?

Back

Comparing rates involves evaluating two or more ratios to determine which one is greater or which offers a better value.

Front

How can you find the better buy when comparing prices?

Back

To find the better buy, compare the unit prices of the items. The item with the lower unit price is the better buy.

Front

What is a unit price?

Back

A unit price is the cost per single unit of measure, such as per pound or per item.

Front

How do you calculate the total cost from a unit price?

Back

Total Cost = Unit Price x Quantity.

Front

What is the significance of the slope in a proportional relationship graph?

Back

In a proportional relationship graph, the slope represents the constant ratio between the two quantities.

Front

What is the difference between a proportional relationship and a non-proportional relationship?

Back

In a proportional relationship, the ratio is constant, while in a non-proportional relationship, the ratio changes.

Front

How can you represent a proportional relationship using a table?

Back

A proportional relationship can be represented in a table by listing pairs of quantities that maintain a constant ratio.