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