Use the graphing calculator to graph the quadratic function y = 2x2 – 6x – 8. which values are solutions of 0 = 2x2 – 6x – 8? check all that apply. –4 ,–1 ,0 ,1 ,4

If (x + 8) is a factor of f(x), which of the following must be true? both x = –8 and x = 8 are roots of f(x). neither x = –8 nor x = 8 is a root of f(x). f(–8) = 0 f(8) = 0