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

What is a unit rate?

Back

A unit rate is a rate in which the denominator is 1.

Front

If 150 people take 20 minutes to ride a roller coaster, how long will it take for 240 people?

Back

32 minutes.

Front

What are the units for a speed of 50 miles per hour?

Back

Miles and hours.

Front

What does the equation y = kx represent?

Back

It represents a proportional relationship where k is the constant of proportionality.

Front

If y = 3x, what is the constant of proportionality?

Back

3.

Front

How do you determine if two quantities are proportional?

Back

Two quantities are proportional if their ratios are equal.

Front

What is the constant of proportionality in the equation y = 1/5x?

Back

1/5.

Front

If a recipe calls for 2 cups of flour for 4 servings, how much flour is needed for 10 servings?

Back

5 cups of flour.

Front

What is the relationship between distance and time in a proportional relationship?

Back

As distance increases, time increases at a constant rate.