Equations v. Inequalities

Answer the following about equations and inequalities.  

1) In your opinion, what is the point of graphing linear equations? What does it help us understand?

2) How is graphing linear inequalities different?  What does it help us understand?  

3) You are tutoring a student that is having a difficult time understanding conjunctions and disjunctions.  Come up with a unique, original way of remembering what each term means and how to graph it.  

4)  Name one original real-world application for graphing a SYSTEM of inequalities.  

This post is worth 8 points (2 per problem).  You will be graded based upon the completeness and thoughtfulness of your answers.