Part of the graph of the function f (x) = (x - 1) (x + 7) is shown below. Which statements about the function are true?
(Select three options). (A) The vertex of the function is at (-4,-15). (B) The vertex of the function is at (-3,-16). (C) The graph is increasing on the interval x > - 3. (D) The graph is positive only on the intervals where x 1. (E) The graph is negative on the interval x < - 4.
(Answers are B C D) !
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