Question

What is the slope of a line that is perpendicular to a slope of 1/2?

Answer 1

`-2`

Explanation:

Consider the standard equation of a `ul("straight")` line

`y=mx+c" "` where `m` is the gradient (slope)

The gradient of a straight line perpendicular to the first one will
be `-1/m`

Given that `m=1/2` then the perpendicular line will have the

gradient of `" "-2/1 -> -2`