Why does this graph doesn’t not show values of y in negative value of x in y=x^(1/n] wheee n is varied

Question

So I plotted the graph of y=x^(1/n) where n was varied and I notice that for some values of n like 4.4 , -0.8 left arm of graph was not there I.e. no values of y for negative x . I didn’t understand this . Please explain .