Christmas MT's answer to Taejin's Secondary 3 E Maths question.

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Christmas MT
Christmas Mt's answer
2904 answers (A Helpful Person)
1st
AB is a vertical line. The set of points which are equidistant from both points A and B would be a horizontal line passing through the midpoint of AB.

More precisely, the point (0,k) shares the same y-coordinate as the midpoint of AB.