Question

The equation of the line parallel to $x$-axis at distance $3$ units above $x$-axis is

• A. x = 3
• B. x = - 3
• C. y = - 3
• D. y = 3

Answer 1

The correct option is D y = 3

The equation of any line parallel to $x$-axis at a distance '$b$' units is given by $y=b$.
Here, $b=3$ [above $x$-axis represents positive direction]
Hence, the required equation is $y=3$