-4x/5+8.8. I think that's it, and if it isn't, i don't know.
Keep in mind that the graph counts in twos.
The factored form of the polynomial deals with the zeros in the graph. Identify the zeros in the graph:
Zeros at:
x = -4, (-4,0)
x = 4, (4,0)
Both values must be inputted into the answer and result in an output of 0, so the answer will be
C. (x+4)(x-4).
Proof:
x = 4:

x = -4
