Consider the following.

f(x) = |x + 6| |x + 1|

(b) Determine the open intervals on which the function is increasing, decreasing, or constant. (Enter your answers using interval notation. If an answer does not exist, enter DNE.)

Consider the following. F(x) = -|x+ 61 - |x+ 1/ (a) Use a graphing utility to graph the function. y -10 -5 5 -5 - X 5 10 -21 N -4 -4 -6- -8/ - 10/ 10 TTTTT O O y 4 10- 10 4 21 X -10 -5 5 X O 0-5 5 10 (b) Determine the open intervals on which the function is increasing, decreasing, or constant. (Enter your answers using interval notation. If an answer does not exist, enter DNE.) increasing decreasing constant