The coordinates of midpoint M and endpoint Q of a segment are M(–7, 8) and Q(–19, 30). Find the coordinates of the other endpoint.

The midpoint is the average of the two endpoints in each coordinate. If the unknown endpoint is P, then P = 2M − Q: (2(−7) − (−19), 2(8) − 30) = (5, −14). Therefore, the other endpoint is (5, −14), choice C.

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