Checkpoint Flashcard: Proportional Relationships (7.CE.2a-b)

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

How do you find a missing value in a ratio table?

Back

To find a missing value in a ratio table, you can set up a proportion based on the known values and solve for the unknown.

Front

If 2 tablespoons of ice tea mix are needed for 5 quarts of water, how much is needed for 1 quart?

Back

0.4 tablespoons.

Front

What is the formula for finding a unit rate?

Back

The formula for finding a unit rate is: (Quantity 1) / (Quantity 2) = (Unit Rate).

Front

How can you express a ratio?

Back

A ratio can be expressed as a fraction, with a colon (:) or with the word 'to' (e.g., 2:3 or 2 to 3).

Front

If John drove 61 miles on 2.5 gallons of gas, how far can he drive on 1 gallon?

Back

24.4 miles.

Front

What is the relationship between ratios and proportions?

Back

Ratios compare two quantities, while proportions state that two ratios are equal.

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply and then divide to find the unknown value.

Front

What is the significance of the constant of proportionality?

Back

The constant of proportionality is the factor that relates two proportional quantities, representing the ratio between them.

Front

How do you convert a ratio to a percentage?

Back

To convert a ratio to a percentage, divide the first quantity by the second quantity and multiply by 100.