Proportional functions review for flashcard

Front

What is a proportional function?

Back

A proportional function is a relationship between two quantities where the ratio of one quantity to the other is constant.

Front

What is the equation of a proportional function?

Back

The equation of a proportional function can be written as y = kx, where k is the constant of proportionality.

Front

How do you find the constant of proportionality?

Back

To find the constant of proportionality (k), divide the value of y by the value of x in the proportional relationship.

Front

If y = 2/7x, what is the constant of proportionality?

Back

The constant of proportionality is 2/7.

Front

What does the unit rate represent in a proportional relationship?

Back

The unit rate represents the amount of one quantity per one unit of another quantity.

Front

If 2 cups of pancake mix make 12 pancakes, how many pancakes can be made with 1 cup of mix?

Back

6 pancakes can be made with 1 cup of mix.

Front

Write the equation for the relationship between the number of games bowled and the cost if it costs $16 for 4 games.

Back

y = 4x, where y is the cost and x is the number of games.

Front

What is the unit rate for the cost of bowling if it costs $16 for 4 games?

Back

The unit rate is $4 per game.

Front

If the price for a pound of apples is $2, what is the cost for 3 pounds?

Back

The cost for 3 pounds is $6.

Front

How do you determine if two quantities are proportional?

Back

Two quantities are proportional if their ratios are equal.