Determine the unit rate for 1 bag of chips if 5 bags cost $6.25; the proportional relationship is described by 5y=$6.25x

To determine the unit rate, we need to find the cost of 1 bag of chips.

From the given proportional relationship:
5y = $6.25x

We know that y represents the cost of 1 bag of chips, so we need to solve for y when x=1:
5y = $6.25(1)
5y = $6.25
y = $6.25 / 5
y = $1.25

Therefore, the unit rate for 1 bag of chips is $1.25.