Question

Equation of a line through the origin and perpendicular to, the line joining (a, 0) and (-a, 0), is

• A. y = 0
• B. x = 0
• C. x = –a
• D. y = ­–a

Answer 1

The correct option is B x = 0

The required equation passing through (0, 0) and its gradient is $m=\frac{1}{0}$, is $y=\frac{1}{0}x\Rightarrow x=0$.