Proportion Review

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Tags

CCSS.7.RP.A.2A

Front

How do you find the unit cost?

Back

To find the unit cost, divide the total cost by the number of units.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If 15 pizzas cost $97.50, what is the unit cost per pizza?

Back

$6.50 per pizza.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What does rate of change describe?

Back

Rate of change describes how one quantity changes in relation to another quantity.

Tags

CCSS.HSF-LE.A.1B

Front

What is a direct variation?

Back

A direct variation is a relationship between two variables where their ratio is constant.

Front

If a car travels 280 miles in 7 hours, how far will it travel in 12 hours?

Back

480 miles.

Tags

CCSS.6.RP.A.3B

Front

What is the formula for finding a missing value in a proportion?

Back

Cross-multiply and solve for the missing value.

Tags

CCSS.7.RP.A.3

Front

What is the first step in solving a proportion?

Back

Identify the two ratios that are being compared.

Tags

CCSS.6.RP.A.3A

Front

What is the relationship between distance and time in direct variation?

Back

Distance varies directly with time; as time increases, distance increases proportionally.

Front

How can you represent a proportional relationship in a table?

Back

By showing equivalent ratios in the table.

Tags

CCSS.7.RP.A.2C