They do that because it may not be said normally, it may have an accent attached along with it.
1.yo
2. You go out
3.you go out
4.we
5.I slango
We need more details to answer this but... It says to write a paragraph based on what you see. Use what you learned in class to write it.
If you need me to write the paragraph, I can, but I need to know what you learned in school to do that...