Answer: (3, 4, 5).
- A (3, 4, 5)
- B (1, 1, 1)
- C (4, 6, 8)
- D (3/2, 5/2, 7/2)
Correct answer: A. (3, 4, 5)
Explanation: From (1 + x)/2 = 2 we get x = 3, and similarly y = 4 and z = 5.
Concept context
Coordinate axes and planes in space, octants, distance between two points, and the section formula
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