The graph represented a quadratic function of the form f(x) = (x - r1)(x- r2). The graph is drawn in the viewing rectangle -10 ≤ X ≤ 10 and -20 ≤ Y ≤ 20 with XSCL = 1 and YSCL = 5. Determine r1 and r2 and write the function in the form f(x) = ax2 + bx+ c. Then use your graphing calculator to compare the graph of the function you found with the graph shown to verify your answer.
