To find the constant of proportionality, we need to look at the ratio of cups of flour to loaves of bread from the table.
The recipe specifies that 2 cups of flour are needed for 1 loaf of bread, which means the ratio of cups of flour (x) to loaves of bread (y) would be \( \frac{x}{y} = 2 \).
Now we can check each row in the table to find the equivalent ratio that matches this constant of proportionality:
- For 1 cup of flour, the number of loaves is \( \frac{1}{2} \). Thus, the ratio is \( \frac{1}{\frac{1}{2}} = 2 \).
- For 2 cups of flour, the number of loaves is 1. Thus, the ratio is \( \frac{2}{1} = 2 \).
- For 3 cups of flour, the number of loaves is \( \frac{3}{2} \). Thus, the ratio is \( \frac{3}{\frac{3}{2}} = 2 \).
- For 4 cups of flour, the number of loaves is 2. Thus, the ratio is \( \frac{4}{2} = 2 \).
Since all ratios equal 2, any row in the table equals the constant of proportionality, but it’s clear that the simplest ratio is the second row:
The ordered pair that represents this ratio is (2, 1).
So the answer is: (2, 1).