Question

The table shows the amount of sugar needed to make lemonade. Are the quantities proportional? Explain which method you used and how you used it to determine if they were proportionate or not.

Sugar (grams)

4

6

8

10

Servings

2

3

4

5

Answer 1

Yes, the quantities are proportional.

Explanation:

To determine whether they were proportional or not, I compared the ratio of grams of sugar to servings in each pair of data points. 4/2, 6/3, 8/4, and 10/5 were the four points. All of them can be simplified to 2/1, which tells us that each serving of sugar is 2 grams, no matter how many servings are counted. This means that the amount of sugar grows in direct proportion to the number of servings.