Which quadratic function is represented by the graph?

f(x) = 0.5(x + 3)(x − 1)
f(x) = 0.5(x − 3)(x + 1)
f(x) = 2(x + 3)(x − 1)
f(x) = 2 (x − 3)(x + 1)

Which quadratic function is represented by the graph fx 05x 3x 1 fx 05x 3x 1 fx 2x 3x 1 fx 2 x 3x 1 class=