Question

What is the slope of a line perpendicular to the line whose equation is x-y=5 fully simplify your answer.

Answer 1

Given:

`x-y=5`
`x-5=y`
`y=x-5`

The general equation is

`y=mx+c`
`m=1`

The slope of a line perpendicular to the line whose equation x-y=5 is

`\text{slope}=-1`