Unit 3A Flashcard

Front

What is a unit price?

Back

The unit price is the cost per single unit of measure, allowing for comparison of prices between different quantities.

Front

How do you determine which product is a better buy?

Back

To determine the better buy, calculate the unit price for each option and compare them. The option with the lower unit price is the better buy.

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 can you identify a proportional relationship from a graph?

Back

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

Front

What does it mean if a graph does not represent a proportional relationship?

Back

If a graph does not represent a proportional relationship, it means the ratio between the two quantities is not constant.

Front

If a 3-pack of magnets costs $2.04, what is the unit price?

Back

The unit price is $0.68 per magnet.

Front

What is the formula to calculate the unit price?

Back

Unit Price = Total Price / Number of Units.

Front

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

Back

The origin (0,0) indicates that when there are zero units of one quantity, there are also zero units of the other quantity, showing a direct relationship.

Front

How do you represent a proportional relationship with an equation?

Back

A proportional relationship can be represented by the equation y = kx, where k is the constant of proportionality.

Front

What is the constant of proportionality?

Back

The constant of proportionality is the ratio of y to x in a proportional relationship, represented by k in the equation y = kx.