The proportional relationship between calories and ounces of soda is shown in the graph. How many calories are in 1 ounce? 3 ounces is 36 6 ounces is 72 9 ounces is 108 and 12 ounces is 144

Based on the given information, we can determine that the relationship between calories and ounces of soda is linear.

Therefore, to find out how many calories are in 1 ounce of soda, we need to determine the slope of the line which represents the relationship.

From the information provided, we can see that for every 3 ounces of soda, there are 36 calories. This means that the slope of the line is 36 / 3 = 12.

Therefore, to find out how many calories are in 1 ounce of soda, we can use the slope value.

1 ounce of soda is 1/3 of 3 ounces, so we can calculate:

1 ounce * (12 calories / 3 ounces) = 4 calories

Therefore, there are 4 calories in 1 ounce of soda.