To determine which option is a proportion, we need to check if the two ratios in each option are equivalent.
Option 1: \( \frac{56}{15} = \frac{18}{1} \)
Cross-multiplying gives: \( 56 \times 1 = 18 \times 15 \)
Calculating both sides:
- Left side: \( 56 = 56 \)
- Right side: \( 18 \times 15 = 270 \)
Since \( 56 \neq 270 \), Option 1 is not a proportion.
Option 2: \( \frac{56}{20} = \frac{18}{1} \)
Cross-multiplying gives: \( 56 \times 1 = 18 \times 20 \)
Calculating both sides:
- Left side: \( 56 = 56 \)
- Right side: \( 18 \times 20 = 360 \)
Since \( 56 \neq 360 \), Option 2 is also not a proportion.
Thus, neither option is a proportion, but if you need to select one based on the definitions and values provided:
You could state both options are not proportions. However, if the assignment provides a direct choice without needing to state that neither is correct, please clarify further or check if other defining characteristics were provided in your materials.