Priming a temporary fix

Question from Tanya: 

Can using a primer help if the person before did not use a primer on sheet rock? I am trying to do a temporary fix to our kitchen until we can afford to remodel the entire space with new drywall, the works. Can you help me?

Jake's Answer: 

Tanya,

If it is new drywall that you are painting, I would use a primer, even though it wasn’t used originally.  You should come out with a better finish.