Watch and take Cornell Notes on the following videos:
VIDEO #1 - What is an inequality?
http://www.virtualnerd.com/pre-algebra/inequalities-multi-step-equations/inequalities-graphs/define-inequalities/inequality-definition
VIDEO #2 - Writing inequalities
http://www.virtualnerd.com/pre-algebra/inequalities-multi-step-equations/inequalities-graphs/define-inequalities/inequality-terminology
VIDEO #3 - How do you graph an inequality?
http://www.virtualnerd.com/pre-algebra/inequalities-multi-step-equations/inequalities-graphs/graphs/number-line-graph-inequality
VIDEO #4 - Writing inequalities from a number line graph?
http://www.virtualnerd.com/pre-algebra/inequalities-multi-step-equations/inequalities-graphs/graphs/number-line-write-graphed-inequality