Question

What must be a factor of the polynomial function f(x) graphed on the coordinate plane below?

Answer 1

If this is your graph then the answer is C: x+2

Explanation:

For edge <3

Answer 2

The graph is not shown, so I will answer the question in general terms.

The factor of the polynomial has the form x - x1, where x1 is a root of the polynomial. This means that at x1, f(x) = 0. Then, to answer your particular question, you need to see at which value of x, the function intercepts the x-axis, and that is your x1.