Engineering Board Exam Reviewer · Equations of Lines · medium

Which of the following lines is parallel to the line 3x-2y+6=0?

  1. 3x+2y-12=0
  2. 4x-9y=6
  3. 12x+18y=15
  4. 15x-10y-9=0

Answer

D. 15x-10y-9=0

Solution

The given line 3x-2y+6=0 has slope 3/2. Checking each choice, 15x-10y-9=0 simplifies to slope 3/2 as well, so it is parallel.

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