Answer:
It's D
Step-by-step explanation:
The x intercepts ( the zeroes) are -1 and 3 so we can write it as
f(x) = a(x + 1)(x - 3) where a is some constant.
The y intercept is at (0, 9) so substituting:-
9 = a *(0 + 1) * (0 -3)
9 = -3a
a = -3 so we have:-
f(x) = -3(x + 1)(x - 3)
= -3(x^2 - 2x - 3)
= -3x^2 + 6x + 9. (answer)
