Straight Line Question 402

Question: The line $ lx+my+n=0 $ will be parallel to x-axis, if

Options:

A) $ l=m=0 $

B) $ m=n=0 $

C) $ l=n=0 $

D) $ l=0 $

Show Answer

Answer:

Correct Answer: D

Solution:

  • Parallel to x-axis
    $ \Rightarrow y=A $ , so l must be zero.