Question

Which of the following represent a line parallel to $x$-axis?

• A. $x+y=3$
• B. $2x+3=7$
• C. $2-y-3=y+1$
• D. $x+3=0$

Answer 1

Answer: (C)

$2-y-3=y+1$

Any straight line parallel to x−x−axis is given by y=k,y=k, where kk is the distance of the line from x−x−axis.

In option C, we have

$2-y-3=y+1$

$⟹y=-1$.