x (liters) y (scoops)

7 28
9 36
10 40
12 48

The table shows a proportional relationship between the liters of water, x, and the number of scoops of powered punch mix, y, required to make punch. What is the unit rate?
Responses
A 22
B 33
C 44
D 6

To find the unit rate, we need to determine how many scoops of powdered punch mix are required per liter of water.

In the given table, for every 1 liter of water, the number of scoops of powdered punch mix required is as follows:
7 liters of water require 28 scoops of powdered punch mix
9 liters of water require 36 scoops of powdered punch mix
10 liters of water require 40 scoops of powdered punch mix
12 liters of water require 48 scoops of powdered punch mix

From this pattern, we can see that for every 1 liter of water, we need 4 scoops of powdered punch mix.

So, the unit rate is 4 scoops of powdered punch mix per 1 liter of water.

Therefore, the correct answer is: D) 6.