Hello GSHOCK :
When you say link are you referring to the data?
Yes you can link your tablet to your boost mobile service if you have a hotspot device from boost mobile or to your cell phone if you are on the $50 plan witch comes with 8GB of hotspot.
Now, if you want to make calls or send text messages you can download apps on the tablet but you will need data connection to use does apps.
Hope this helps if it does don't forget to mark as solution
Other than by hotspot, can you add a tablet to your plan to be used independably without the phone being present? If so, how much would the add on be?