Solid Shading
Solid shading is one block of solid color. Solid shading has the advantage of being faster to calculate and displays better on some devices. FX Graph uses solid shading when you have allowed it to and when the system of inequations is not too complicated for its systems.
Dotted shading
Uses an array of dots. FX Graph tests an array of coordinates and determines whether each point satisfies all inequations. Any points which satisfy all inequations are displayed. Dotted shading is a more robust approach - the complexity of the regions does not matter - but it is computationally intensive and does not display as well on some devices.
FX Graph will use dotted shading when the system of inequations is too complicated to solve. For example,
