Practice telling whether or not the relationship between two quantities is proportional by reasoning about equivalent ratios.

Problem

You are making lemonade. The amount of sugar you need depends on the amount of lemonade mix you use.
Cups of sugarstart fraction, 1, divided by, 3, end fraction13
Packets of lemonade mix139
Is the amount of sugar you need proportional to the amount of lemonade mix you use?
Please choose from one of the following options.