Question

Find the equation of straight line passing through $(3,4)$ and parallel to $x-$ axis.

Answer 1

Equation of line parallel to $x-$ axis i.e. $y=0$ is $y=c$......(1), where $c$ is a constant.

According to the problem, the line (1) passing through $(3,4)$, then we get, $c=4$.

Then the equation of the line is $y=4$.