Modes
On the upper right-hand corner, you can switch between exploring linear and quadratic functions.
Forms
In the linear mode, you can use the double arrows to switch between the standard form and the point-slope form.
Changing Values
You can change the values of each coefficient by using the sliders on the left. You can link two or more sliders by clicking on the chains below each value. This will allow for both (or all three) values to increase or decrease by the same amount.
Tracing
You can trace how the coefficients change the graph and/or its properties by clicking on the line, curve, or vertexbutton (located in the lower left-hand corner). These buttons toggle such that once it is clicked on again, any traces are erased.
Exploring the Graph
You can explore coordinates of the graph by hovering over a specific point on the line or curve.