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Difficulty: 2/102023 NMTC 2023 (QI-14)

The coordinates of the midpoint of points in plane with coordinates and is

Options:

  • A.

    (0,0)

  • (3,3)

  • C.

    (2,2)

  • D.

    (8,8)

Guide / Hint

Hint 1: Apply the midpoint formula: and .

Hint 2: Plug in and into the formula.

Hint 3: Evaluate to find and select the matching option index.

Solution

Step 1 (Midpoint Formula): The coordinates of the midpoint of two points and are given by:

Step 2 (Substitute the Coordinates): We are given and :

Step 3 (Conclusion): The midpoint coordinates are , which matches option index 1 in ['(0,0)', '(3,3)', '(2,2)', '(8,8)'].

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    2023 NMTC 2023 QI-14 - Olympiad Math Olympiad Question | Leminno