Engineering Board Exam Reviewer · Distance Between 2 Parallel Lines · easy
EE Board April 1995: Find the distance between the lines 3x+y-12=0 and 3x+y-4=0.
- 16sqrt(10)
- 12sqrt(10)
- 4sqrt(10)
- 8sqrt(10)
Answer
D. 8sqrt(10)
Solution
Writing both lines with the same A and B coefficients, d = |-12-(-4)|sqrt(9+1) = 8sqrt(10).