Question

Equation of the line parallel to the y- axis at a distance of 3 units from it and to its left is :

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

Answer 1

The correct option is D x = -3

The line is parallel to the y- axis and is at distance of 3 units from it. $\to$ the line meets the x- axis at either 3 or -3. It also given that the line is to the left side of the y- axis. So the line meets the x- axis at -3.

$\therefore$ Equation of line is x = -3