Use the image to answer the question.

The stretch of a spring in millimeters is proportional to the weight in grams attached to the end of the spring. Find the unit rate.
(1 point)

The unit rate can be found by dividing the stretch of the spring by the weight attached to the end of the spring. However, since only an image is given and not the actual values of the stretch or weight, it is not possible to determine the unit rate.