The unit rate for the given proportional relationship is k = 15.
How to get the unit rate?
A proportional relationship between two variables can be written as:
y = k*x
Where k is the constant of proportionality (also called the unit rate).
If we look at the graph, we can see that the line passes through the point (1, 15).
This means that when x = 1, we must have y = 15.
Replacing that in the proportional relation we get:
15 = k*1
Solving for k:
k = 15/1 = 15
So we conclude that the unit rate is 15.
If you want to learn more about proportional relations:
https://brainly.com/question/12242745
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