Find the coordinates of the midpoint of line segment mathrm cap k cap l with endpoints cap k times open paren negative 20 comma 3 close paren and cap l times open paren 12 comma negative 2 close paren

Use the midpoint formula: average the x-coordinates and average the y-coordinates. The x-coordinate is (−20 + 12) ÷ 2 = −4, and the y-coordinate is (3 + (−2)) ÷ 2 = 1/2. So the midpoint is (−4, 1/2), choice B.

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