Reflect

Geometry Level pending

Points P P and R R are located at ( 1 , 3 ) (1,3) and ( 7 , 15 ) (7,15) respectively. Point M M is the midpoint of segment P R PR . Segment P R PR is reflected over the x-axis. What is the sum of the coordinates of the image of point M M (the midpoint of the reflected segment)?


The answer is -5.

A Former Brilliant Member by A Former Brilliant Member

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1 solution

Point M M has coordinates ( 4 , 9 ) (4,9) . Therefore, its image has coordinates ( 4 , − 9 ) (4,-9) . Thus the sum is − 5 \boxed{-5} .

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