Answer:
Yes
Explanation:
Mrs. berry is making cakes for the school bake sale.
She needs 1/2 cups of sugar for every cake she makes.
Yes it is proportional.
For 1 cake, she will need 1/2 cups of sugar
For 2 cakes, she will need 1 cup of sugar.
For 3 cakes, she will need 3/2 cups of sugar and so on.
It can be seen that the value is proportional.