UNIT 4 - MILESTONE 4 1 1 2 3 4 56 Question 11 O Mark this question Determine the interval(s) over which the graph of y = - x4 -8x$+ 5x -7 is concave up or concave down. Concave up on ( - 4, 0o) O Concave down on ( - 0o, - 4) Concave up on ( - oo, - 4) U(0, co) O Concave down on ( - 4, 0) Concave up on ( - 4, 0) O Concave down on ( - oo, - 4) U(0, co) Concave up on ( - 00, - 4) O Concave down on ( - 4, oo) SAVE & CONTINUE Report an issue with this