If the distance between (1, 2) and (4, k) is 5, the possible values of k are:

  1. 6 or -2
  2. 6 only
  3. 4 or -4
  4. -6 or 2
Answer

A) 6 or -2

(4 - 1)^2 + (k - 2)^2 = 25 Rightarrow (k - 2)^2 = 16 Rightarrow k - 2 = pm 4 Rightarrow k = 6 or -2. SLO M-09-B-01 · Understanding

Mathematics MCQ · More Coordinate Geometry MCQs · Practise