Question

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

x – 3
x – 1
x + 1
x + 3

Answer 1

x - 1

Explanation:

Answer 2

easy, if the intercepts or roots or zeros of the equation are r₁ and r₂ then 2 factors of the equatoin are (x-r₁) and (x-r₂)

so

we see it intercepts the x axis at 1 and 6
r₁=1
r₂=6

therefor 2 roots are (x-1) and (x-6)

answer is 2nd option