Experiment with these inequalities on the Desmos graphing calculator.

For further Desmos examples see

**Explore Straight Lines**and**Explore Graphs**.**Notes**

You may find the following notes helpful in understanding Inequalities

From

From

**Craig Barton**– some very clear notes aimed at students aged 11-16From David Smith’s The Maths Teacher, the

**A Level section**(age 16-18) includes a video and exercisess on Linear and quadratic inequalities (under Algebra AS Level)From Tony Hobson’s

**Just the Maths**aimed at older students, see**Inequalities 1**and**Inequalities 2**which progresses to absolute value inequalitiesMore examples on the Desmos Graphing calculator are available on the

**Explore Graphs**page.