The lines 5x + 2y + 1 = 0 and 10x + 4y + 9 = 0 are:

  1. neither parallel nor perpendicular
  2. perpendicular
  3. parallel
  4. the same line
Answer

C) parallel

Slopes: m1 = - 52, m2 = - 52. They are equal, so the lines are parallel. SLO M-09-B-05 · Understanding

Mathematics MCQ · More Coordinate Geometry MCQs · Practise