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

How can you tell if a table of values represents a proportional relationship?

Back

A table represents a proportional relationship if the ratios of the corresponding values are equal.

Front

If Julio can solve 5 math problems in 10 minutes, how many can he solve in 40 minutes?

Back

20 math problems.

Front

What is the equation for a proportional relationship?

Back

y = kx, where k is the constant of proportionality.

Front

If the cost of 3 tickets is $45, what is the cost of 1 ticket?

Back

$15.

Front

What does the constant of proportionality represent?

Back

It represents the ratio between two proportional quantities.

Front

If y = 2.30x, what does this equation represent in a real-world context?

Back

It represents that for every app downloaded, the earnings increase by $2.30.

Front

What is the total cost of 5 tickets if each ticket costs $15?

Back

$75.

Front

If a table shows that for every 4 apples, there are 8 oranges, is this proportional?

Back

Yes, because the ratio of apples to oranges is constant (1:2).

Front

What is the relationship between x and y if y = 3x?

Back

y is three times the value of x.