Final answer:
To find the other endpoint, use the midpoint formula.
Step-by-step explanation:
To find the other endpoint, we can use the midpoint formula. It states that the midpoint of a line segment is the average of the x-coordinates and the average of the y-coordinates of its endpoints. Let's denote the coordinates of the other endpoint as (x, y). Using the midpoint formula, we can set up two equations: (4 + x)/2 = 5 and (1 + y)/2 = -1. Solving these equations, we find that x = 6 and y = -3. Therefore, the other endpoint is (6, -3).
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