This video from Maynooth University shows how to manipulate and solve linear inequalities.
Note: All Maynooth University content is available for free at msc.maths.nuim.ie.
Read through these notes from MathCentre to learn more about inequalities.
A pdf of this document can be downloaded here.
Practise solving some linear inequalities using the following NUMBAS exercises.
Please click here to view this NUMBAS question in another window.