Which statements about the graph of the function f(x) = –x2 – 4x + 2 are true? Select three options. The domain is {x|x ≤ �2}. The range is {y|y ≤ 6}. The function is increasing over the interval (–∞ , –2). The function is decreasing over the interval (−4, ∞). The function has a positive y-intercept.