What is the y-coordinate of the midpoint of the segment joining (3, -1) and (3, 7)?
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Correct!
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Correct answer to question 79 (Mathematics Knowledge): 3
Method
Average the two y values: (-1 + 7) / 2 = 3. The choice 4 is half the length of the segment rather than the midpoint's coordinate.
Updated: November 2026
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