Answer:
d. The function is negative for all real values of x where x<-3 or x>-1.
Step-by-step explanation:
I think your question is missed of key information, allow me to add in and hope it will fit the original one.
Please have a look at the attached photos.
My answer:
Given the Quadratic function as following:
f(x) = –(x + 3)(x – 1)
As we can see, the graph of the function is a downward parabola because the parameter a = -1 is negative.
It's root are -3 and 1.
Let analyse 4 answers:
- a. The function is positive for all real values of x where X<-1.
Wrong, The function is positive where -3 < x < -1
- b. The function is negative for all real values of x where x <-3 and where x> 1.
wrong, where where x> -1. the function is negative
- c. The function is positive for all real values of x where x > 0.
Wrong. The function is negative for all real values of x where x > 0.
- d. The function is negative for all real values of x where x<-3 or x>-1.
True, as it can be seen in the photo.
Hope it will find you well.
