Interact with the dynamic Geogebra applet below to explore the characteristics of a quadratic function that is given in factored form \(f\left( x \right) = a\left( {x - p} \right)\left( {x - q} \right)\) where \(a, p\) and \(q\) are constants. The characteristics illustrated in the applet are: line of symmetry, vertex, x-intercepts and concavity.