- Notice how the point on the graph is paired with the points
and arrows on the mapping diagram.

- Move the slider to change the value of $A$, $B$, or $C$.
- Move the slider or enter a number in the box for the value of
$k$ in the equation.

- Check the box to see the solutions of the equation visualized on the graph and the mapping diagram.
- Select the point $x$ in the mapping diagram to move the point
by mouse to verify the solutions.

Martin Flashman, Oct.21, 2013, Created with GeoGebra