Question

What is the slope of the line perpendicular to `y=2/7*x-13`?

Answer 1

`-7/2`

Explanation:

The original equation is of form `y=mx+c` where m is the gradient.

The gradient of a line perpendicular to this is `(-1)xx1/m`

So for your question we have `(-1)xx( 1-:2/7) = -7/2`