To determine which candy bar is the cheapest per bar, I would need to see the specific cost and quantity values for candy bar A and candy bar B. However, you mentioned that the proportional relationship is represented by the equation \( Y = X \).
In your context, \( Y \) typically represents the total cost and \( X \) represents the quantity (number of bars). If we have the cost per candy bar for each option, we can analyze the cost per bar:
- For any candy bar, if you know the total cost and the quantity, the cost per bar can be calculated using the formula:
\[ \text{Cost per bar} = \frac{\text{Total Cost}}{\text{Quantity}} \]
Please provide the specific costs and quantities for candy bar A and candy bar B, and I can help you find out which is the cheapest!