Question

The slope of line is $2$. Find the slope of the line perpendicular to this line.

• A. $-2$
• B. $2$
• C. $\frac{-1}{2}$
• D. $\frac{1}{2}$

Answer 1

The correct option is C $\frac{-1}{2}$

Given, The line is perpendicular to the line with slope $2$.

Let. the slope of the required line would be $m$


Concept: If two line are perpendicular to each other, then product of the slope of both line is $-1.$
$m\times 2=-1$
$m=\frac{-1}{2}$
Hence, option (c) is correct.