To determine the unit rate for 1 bag of Doritos, we first need to find the cost of one bag based on the total cost and the number of bags.
You have stated that 5 bags cost $6.25. To find the cost of 1 bag, we can use the following calculation:
\[ \text{Cost of 1 bag} = \frac{\text{Total cost}}{\text{Number of bags}} = \frac{6.25}{5} \]
Now, let's perform the division:
\[ \text{Cost of 1 bag} = 1.25 \]
So, the unit rate for 1 bag of Doritos is $1.25.
As for the proportional relationship represented by \(5y = 6.25x\), we can express it in terms of \(y\) to relate it to the unit rate. If \(x\) is the number of bags and \(y\) is the cost, we can find the unit rate as follows:
- Divide both sides of the equation by 5 to solve for \(y\): \[ y = \frac{6.25}{5}x \]
- Simplifying gives: \[ y = 1.25x \]
This means that for every bag (\(x = 1\)), the cost (\(y\)) is $1.25, reaffirming our earlier result.