- Let's say we have two equations for and for . Combine these two equations and we get one piecewise equation as below.

Now, try to drag point A across y-axis. You'll find that point A will 'jump' from the left line to the right when x = 0. Now, click on 'View Domain' and you'll find that a pink point appears on the x-axis. If you drag point A away from the previous position, the pink points showing the domain on the x-axis. If you want to view the range on the y-axis, simply click on 'View Range'. - For the second piecewise equation

perhaps you can move the values of 'a' and 'b' to view the changes of the graphs and also the domain and range. Likewise, click on 'View Domain', 'View Range' and drag point A to view the domain and range of the function.

- For the third piecewise equation

try to change the values of 'a' and 'b' to view the changes happen to graph. Then, click on 'View Domain', 'View Range' and drag point A to view the domain and range of the function.

Betty, Created with GeoGebra