Question

Question #9ba75

Answer 1

It means that the angles between the line and both the `x` and `y` axis are equal.

Explanation:

This in turn means they must be `45^o` in other words the slope is `=1` or `-1`.

In terms of function this means:
`y=x+b` OR `y=-x+b`
(only `y=-x` is shown below)
graph{-x [-10, 10, -5, 5]}