Change the slider variables to change the function values. Click "clear" to clear the screen. Click the quadratic function button to graph your function. the equation doesn't use the ax^2+bx+c simplified form, it uses a d(x/c-a)^2+b form, where each variable correllates directly with a figure of the graph. C stretches the graph on the x axis, D stretches the graph on the y axis, A translates the graph along the x axis, and B translates it along the y axis. for best quality download and run in turbo speed.