Please help.
I really don't understand
![Please help I really dont understand class=](https://us-static.z-dn.net/files/da2/fb0a5cd159b8a2aa5ca634edd307f46f.jpg)
10/2 = 5
The first point would be 5.
-9/2 = -4.5
The second point would be -4.5