Google Classroom
GeoGebraGeoGebra Classroom

Quadratic Roots

Use the applet below to see the x-values of the intersections of the circle and the line. Compare with the x-values of the roots of f(x).
Move p (the coefficient on x in f(x)) and see how it effects the circle. Move q (the constant of f(x)) and see how it moves the line. Click the checkbox on f(x) to see the quadradic and its roots.