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.

Tags

CCSS.7.RP.A.2A

Front

How do you find the unit rate in a proportional relationship?

Back

To find the unit rate, divide the quantity of one variable by the quantity of the other variable when the second variable is equal to 1.

Tags

CCSS.7.RP.A.2B

Front

If Kenny can type 720 words in 18 minutes, what is his typing rate in words per minute?

Back

Kenny's typing rate is 40 words per minute (720 words ÷ 18 minutes).

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

In a ratio of cats to dogs of 2:3, if there are 60 dogs, how many cats are there?

Back

There are 40 cats (2/3 = x/60; x = 40).

Front

What is the scale factor in the model of the Eiffel Tower if 1 cm represents 4 meters?

Back

The scale factor is 4 meters per 1 cm.

Tags

CCSS.7.RP.A.2C

Front

How do you set up a proportion to solve for a missing value?

Back

Set up a proportion by creating a ratio from known values and then cross-multiply to solve for the missing value.

Tags

CCSS.7.RP.A.2C

Front

What is the formula for finding the total distance traveled in a proportional relationship?

Back

The formula is Distance = Rate × Time.

Tags

CCSS.7.RP.A.3

Front

If a jet flies 430 miles in 1 hour, what is the distance it will fly in 5 hours?

Back

The jet will fly 2150 miles (430 miles × 5 hours).

Tags

CCSS.3.OA.A.3

Front

What is the actual height of the Eiffel Tower if the model is 76 cm tall?

Back

The actual height is 304 meters (76 cm × 4 meters/cm).

Front

How do you determine the missing number in a proportional table?

Back

Use the known ratios to set up a proportion and solve for the missing number.

Tags

CCSS.7.RP.A.2C