Parallel, perpendicular, or neither?

Exercise and reference answers

Questions

1. Question

   Two lines with equal slopes are

   Choices

   1. perpendicular
   2. parallel
   3. neither

   Correct choice

   parallel

2. Question

   Two lines whose slopes multiply to −1 are

   Choices

   1. parallel
   2. neither
   3. perpendicular

   Correct choice

   perpendicular

3. Question

   Slopes 2 and −1/2 mean the lines are

   Choices

   1. perpendicular
   2. parallel
   3. neither

   Correct choice

   perpendicular

4. Question

   Slopes 3 and 3 mean the lines are

   Choices

   1. perpendicular
   2. parallel
   3. neither

   Correct choice

   parallel

Explanation