Answer:
[tex]x \ne - 4[/tex]
Step-by-step explanation:
The given function is
[tex]f(x) = \frac{x - 1}{x + 4} [/tex]
This is not defined when the denominator is zero.
Hence the restriction is on the denominator.
This implies that
[tex]x + 4 \ne0[/tex]
[tex]x \ne - 4[/tex]
The restriction is that x=-4 is not in the domain of the given function.
