To determine the number of calories in 1 ounce of soda from a proportional relationship graph, you would need to look at the specific values plotted on the graph.
In a proportional relationship, if you know the total calories for a certain amount of ounces (for example, 200 calories for 8 ounces), you can find the calories per ounce by dividing the total calories by the number of ounces.
For example:
If the graph shows that there are 200 calories for 8 ounces: \[ \text{Calories per ounce} = \frac{\text{Total Calories}}{\text{Total Ounces}} = \frac{200 \text{ calories}}{8 \text{ ounces}} = 25 \text{ calories per ounce} \]
Without seeing the specific graph or data points, I can't give you an exact answer. Please provide the values or look at the graph closely, and use that method to calculate the calories per ounce.