The graph of the function f(x) = –(x + 3)(x – 1) which statement about the function is true
1.the function is positive for all real values of x where x < –1.
2. the function is negative for all real values of x where x < –3 and where x > 1.
3. the function is positive for all real values of x where x > 0.
4. the function is negative for all real values of x where x < –3 or x > –1.