Worked example 12 (Sketching the quadratic graph in the form of y=(x-m)(x-n) Sketch the graph of each of the following functions: a) y=(x-1)(x+3) b) y=-(x+1)(x-5) Solutions for a) Step 1: Determine whether the coefficient of x² is negative or positive. Since the coefficient of x² is 1 which is a positive number, the graph opens […]