Unit 2 Proportional Relationships Review Practice

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It expresses how much of one quantity corresponds to one unit of another quantity.

Front

How do you calculate the unit rate from a graph?

Back

To calculate the unit rate from a graph, identify the change in the vertical axis (y) and the change in the horizontal axis (x). Divide the change in y by the change in x.

Front

If Ava pays $108 every six weeks, how do you find the yearly cost?

Back

To find the yearly cost, first determine how many six-week periods are in a year (52 weeks / 6 weeks = 8.67). Then multiply the number of periods by the cost per period: 8.67 * $108 = $936.

Front

What does it mean for a table to be proportional?

Back

A table is proportional if the ratio between the two quantities remains constant. This means that as one quantity increases, the other quantity increases at a consistent rate.

Front

What is the equation for money earned (d) based on hours worked (h) if d = 8h?

Back

The equation d = 8h means that for every hour worked, $8 is earned.

Front

How do you determine the cost of multiple items based on a known cost?

Back

To determine the cost of multiple items, find the cost per item and multiply it by the number of items. For example, if 4 bottles cost $3.88, the cost per bottle is $3.88 / 4.

Front

What is the formula to find the total cost of items?

Back

Total Cost = Cost per Item × Number of Items.

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where their ratio is constant.

Front

How can you identify a proportional relationship from a set of data?

Back

You can identify a proportional relationship by checking if the ratios of corresponding values are equal.

Front

What is the significance of the unit rate in real-life situations?

Back

The unit rate helps compare different quantities and make informed decisions, such as determining the best price for items.