In GeoGebra, every object has a unique name that can be used to label the object in the Graphics View. In addition, an object can also be labeled using its value or its name and value. You can change this label setting in the Properties Dialog on tab ‘Basic’ by selecting the corresponding option ‘Name’, ‘Value’, or ‘Name & Value’ from the drop down menu next to the checkbox ‘Show Label’.
Note: The value of a point are his coordinates, while the value of a function is its equation.