WAEC Mathematics 2018 Question 21

Question 21

Coordinate Geometry

If M and N are the points (−3, 8) and (5, −7) respectively, fnd MN.

  1. A.8 units
  2. B.11 units
  3. C.15 units
  4. D.17 units
Show the answer and explanation

Answer: D (17 units)

Explanation

MN = √(8² + 15²) = √289 = 17 units.