Using proportions, it is found that the coordinates of the other end of the fence are (-1,-7).
<h3>What is a proportion?</h3>
A proportion is a fraction of a total amount, and the measures are related using a rule of three.
The midpoint of a segment is the <u>mean of the coordinates</u> of the endpoints, hence:

x + 8 = 7
x = -1.

y + 5 = -2.
y = -7.
The coordinates of the other end of the fence are (-1,-7).
More can be learned about proportions at brainly.com/question/24372153
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