The lines x - 3y + 2 = 0 and 2x + y + 5 = 0 are:

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

B) neither parallel nor perpendicular

Slopes: m1 = 13, m2 = -2. They are not equal and m1 m2 = - 23 neq -1. SLO M-09-B-05 · Understanding

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