Which statements about the graph of the function f(x) = –x2 – 4x + 2 are true? Select three options.

Question

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.

Answer 1

The domain is {x|x ≤ –2}.
The range is {y|y ≤ 6}.
The function is decreasing over the interval (−4, ∞).