Slope=
-5
5
1/5
-1/5
-3
Undefined
1
3
3/2
-3/2
-4
4
-1/3
3/4
-4/3
1/4
0
-1/4
2
-2
-2/3
3/5
5/3
1/3
-1/2
-2/5
2/3
-5/10
2/5
5/2
6/7