Question

The graph of the function f(x) = –(x + 3)(x – 1) is shown below.

Which statement about the function is true?

The function is positive for all real values of x where
x < –1.
The function is negative for all real values of x where
x < –3 and where x > 1.
The function is positive for all real values of x where
x > 0.
The function is negative for all real values of x where
x < –3 or x > –1.

Answer 1

the answer is B

Explanation:

Answer 2

The function is negative for all real values of x where

x < –3 and where x > 1.

Explanation:

This quadratic function is downward parabola.

It's root are -3 and 1.

Quadratic is positive between -3 and 1.

And negative on R-(-3,1).