At the local dairy farm, Kareem buys a 32-oz container of yogurt for $2.56. Jonah buys a 6-oz container of yogurt for $0.48. Are the cost, y, in dollars and the amount of yogurt, x, proportional? Explain. Write an equation to represent this relationship. ; The ratios

are equivalent, y =
x.
over and over

Yes, the cost in dollars and the amount of yogurt are proportional.

The equation is:

Step-by-step explanation:

1. If varies directly as , you can write it as following:

Where is the constant of proportionality.

2. Let's calculate the value of the constant of proportionality. If and , you have:

3. Then, the equation is:

4. Let's verify if they are directly proportional. Substitute which is the amount of yogurt bought by Jonah. The result must be $0,48:

5. They are directly proportional.