Question

graph of a cubic polynomial that falls to the left and rises to the right with x intercepts negative 3, negative 1, and 3

Which of the following functions best represents the graph?

f(x) = (x + 3)(x − 3)(x − 9)
f(x) = (x + 3)(x − 3)(x + 9)
f(x) = (x + 3)(x − 3)(x − 1)
f(x) = (x + 3)(x − 3)(x + 1)

Answer 1

Answer:

The best is  f(x) = (x + 3)(x − 3)(x + 1).

Step-by-step explanation:

The coefficient of x^3 will be positive because of where the graph rises and falls.

As one of the x intercepts is negative  3 one of the factors will be (x + 3).

By the same reasoning the other 2 factors will be (x - 3) and (x + 1).

Answer 2

Answer:

D is correct!

Step-by-step explanation:

I am with the same program.