-3/1

1/3

3/1

-1/3

undefined

0

positive

negative

undefined

1/1

-1/1

2/1

2/3

-3/2

-2/3

3/2

-5/2

5/2

-2/5

2/5

zero

undefined

positive

negative

-5/4

-4/5

5/4

4/5

1/4

4/1

negative

undefined

positive

negative

undefined

zero

you can calculate slope of this

you can NOT calculate slop of this

Slope guy

Crazy man who has nothing to do with math

Ms. Warns's husband

The janitor the day before christmas break