Proportions on a Graph

Front

What is a proportion?

Back

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

Front

How do you determine if a table of values is proportional?

Back

A table is proportional if the ratio of the values in one column to the values in another column is constant.

Front

If 5 gallons of water are used in 2 minutes, how much water is used in 8 minutes?

Back

20 gallons.

Front

What is the constant of proportionality?

Back

The constant of proportionality is the factor that relates two proportional quantities.

Front

If a recipe requires 2 cups of sugar for 4 jars, how many cups are needed for 12 jars?

Back

6 cups.

Front

What does it mean if two quantities are directly proportional?

Back

If two quantities are directly proportional, as one quantity increases, the other quantity increases at a constant rate.

Front

How can you represent a proportional relationship on a graph?

Back

A proportional relationship can be represented by a straight line that passes through the origin.

Front

If a person weighs 60 pounds on the moon, how much would they weigh on Earth?

Back

360 pounds.

Front

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

Back

If a/b = c/d, then ad = bc.

Front

What is an example of a non-proportional relationship?

Back

A relationship where the ratio between two quantities is not constant, such as the number of hours worked and the total pay if there is a base salary.