Respuesta :
Answer:
I believe the answer is -1.
Step-by-step explanation:
Answer:
x can be any real solution
or
[tex]x \in \mathbb{R}[/tex]
Step-by-step explanation:
f(x) = -1 is the same as y = -1
y = -1 is a horizontal line so x can be any arbitrary number.
a mathematical way to put it is x can be any real solutions.