Question

Write the equation of a line parallel to $x-$ axis at a distance of $3$ units from it. The equation is $y=k$ then $k=$

Answer 1

The equation of a line parallel to the $x-$ axis is $y=c$.....(1) where $c$ is constant.

Given that the distance of the line (1) form $x$ axis is $3$ units.

Then we've, $c=3$.

So the equation of the line is $y=3$.

So $k=3$.