Can you give me and example of an inequality and provide a value that may or may not be a solution to the inequality?
I searched Google under the key words "solve inequality" to get these possible sources:
http://www.math.com/school/subject2/lessons/S2U3L6GL.html
http://www.sosmath.com/algebra/inequalities/ineq01/ineq01.html
http://www.analyzemath.com/Linear_Inequalities/Linear_Inequalities_Tutor.html
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.
I hope this helps. Thanks for asking.