Representing 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.

Front

If Maria makes $15 an hour for babysitting, how much money would she make for 5 hours?

Back

$75

Front

What is the missing value for x in the equation 2x = 60?

Back

30

Front

In a proportional relationship, if there are 4 pieces of green candy, how many pieces of red candy should there be if the ratio is 1:3?

Back

12

Front

According to the graph, if the cost of 1 shirt is $9, what is the cost for 4 shirts?

Back

$36

Front

What does it mean if two quantities are directly proportional?

Back

It means that as one quantity increases, the other quantity increases at a constant rate.

Front

If a recipe calls for 2 cups of flour for every 3 cups of sugar, how much flour is needed for 9 cups of sugar?

Back

6 cups of flour.

Front

What is the constant of proportionality in the equation y = 4x?

Back

The constant of proportionality is 4.

Front

If a car travels 60 miles in 1 hour, how far will it travel in 3 hours?

Back

180 miles.

Front

What is the formula for finding the unit rate?

Back

Unit rate = Total quantity / Number of units.