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