A marine biologist needs to put a GPS device underwater, halfway between two tracking stations to help document great white shark movements. Tracking station #1 is located at (–50, –25) and tracking station #2 is at (200, –65).

To find the point halfway between the stations, average their x-coordinates and their y-coordinates separately. The midpoint is ((−50 + 200)/2, (−25 + (−65))/2) = (75, −45), so the correct choice is (75, −45).

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