[size=150]This quiz is to check your understanding of quadratic functions written in the form[br] [math]y=\left(x-a\right)\left(x-b\right)[/math][/size] or [math]y=-\left(x-a\right)\left(x-b\right)[/math][br][br][size=150][b]Try at least 12 different questions continuously correct, [/b]to be sure you have understood the concepts behind the curve sketching and how a, b and + or - expression affect the shape of the curve[/size]