End of Unit 2 Review

Front

What is the definition of 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 proportional relationship?

Back

To calculate the unit rate, divide the total quantity of one item by the total quantity of the other item. For example, if you travel 120 miles in 2 hours, the unit rate is 120 miles ÷ 2 hours = 60 miles/hour.

Front

What is the formula to find the cost per day if given the total cost and number of days?

Back

Cost per day = Total cost ÷ Number of days.

Front

If Taylor can write 25 words per minute, how many words can he write in 10 minutes?

Back

250 words (25 words/minute × 10 minutes = 250 words).

Front

What is proportionality in mathematics?

Back

Proportionality refers to the relationship between two quantities where their ratio remains constant.

Front

How do you determine the cost of renting a tent for one day if the total cost for 5 days is $160?

Back

Divide the total cost by the number of days: $160 ÷ 5 days = $32 per day.

Front

What does it mean if a relationship is undefined in terms of proportionality?

Back

An undefined relationship in proportionality means that the ratio cannot be determined, often because the denominator is zero.

Front

If 45 liters of water are used in 9 minutes, how much water is used per minute?

Back

5 liters per minute (45 liters ÷ 9 minutes = 5 liters/minute).

Front

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

Back

Understanding unit rates helps in making informed decisions, such as comparing prices, calculating speed, and determining efficiency.

Front

How can you express a rate in terms of a single unit?

Back

To express a rate in terms of a single unit, simplify the ratio to show how much of one quantity corresponds to one unit of another quantity.