Engineering Board Exam Reviewer · Angle Between Two Lines · easy

The line 2x-3y+2=0 is perpendicular to another line L1 of unknown equation. Find the slope of L1.

  1. 3/2
  2. -3/2
  3. 2/3
  4. -2/3

Answer

B. -3/2

Solution

2x-3y+2=0 has slope 2/3. The perpendicular slope is -1/2/3 = -3/2.

More Angle Between Two Lines questions

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  2. Find the acute angle between the lines 2x-y+1=0 and x+3y-2=0, in degrees.
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