Proportional relationships

You are making lemonade. The amount of sugar you need depends on the amount of lemonade mix you use. | | || - | :-: | :-:| :-: Cups of sugar| $\dfrac13$ | $1$| $3$ Packets of lemonade mix | $1$ | $3$ | $9$ **Is the amount of sugar you need proportional to the amount of lemonade mix you use?** [[☃ radio 1]]