The value of n in the given function is negative even integer.
The given parameters:
[tex]f(x) = a(x + k)^{\frac{1}{n } } + c[/tex]
When n is positive, the function is written as;
[tex]f(x) = a(x + k)^{\frac{1}{n } } + c[/tex]
When n is negative, the function is written as;
[tex]f(x) = a(x + k)^{\frac{1}{-n} } + c\\\\f(x) = \frac{a}{(x + k)^n} + c[/tex]
When n is odd integer, the function will have three possible curves.
When n is even integer, the function will have two curves: one real solution and one imaginary solution.
When n is positive even integer, the real solution will curve upwards.
When n is negative even integer, the real solution will curve downwards.
The plot in the given graph curves downwards which indicates negative even integer value of n.
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