Use the sliders to adjust the gradient [i]m[/i] (the slope) and [i]y[/i] intercept [i]c[/i] for the straight line.[br]Click and drag the points [i]A[/i] and [i]B[/i] to see how the gradient calculation is affected.

The applet allows the user to plot the quadratic function [math]y=ax^2+bx+c[/math] using sliders controlling [math]a[/math], [math]b[/math] and [math]c[/math]. It also displays various information about the function, such as the solutions to [math]y=0[/math] (if real solutions exist), the line of symmetry and the value of the discriminant. An alternative version of the function, in completed square form is also shown.