# Inequalities on Number Line - Add controls to Raise above x axis (II)

- Author:
- Lew W. S.

- Topic:
- Inequalities

This approach uses Unicode to check the <, >, <=, >= (4 inequalities symbol) and selects the correct type of point style to implement , and also the direction of the inequalities.
Also the CAS was used to solve combined inequalities a && b.
2 May 2020
The technique here was incorporated into the Solve simultaneous linear inequalities exercise at https://www.geogebra.org/m/rsjvsqpp

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