# Equation of Lines Parallel to Axes

(i) Equation of Line Parallel to X-Axis:
Consider $l$ be the straight line which is passing through the point $A\left( {0,b} \right)$ is parallel to $X$-axis, because this point is lies on the $Y$-axis and any point on Y-axis whose values of $x$ are zero.

Then the equation of a line parallel to X-axis is given by

(ii) Equation of Line Parallel to Y-Axis:
Consider $l$ be the straight line which is passing through the point $B\left( {a,0} \right)$ is parallel to $Y$-axis, because this point is lies on the $X$-axis and any point on X-axis whose values of $y$ are zero.

Then the equation of a line parallel to Y-axis is given by