I need help answering this question need domain and range 9 tutors have done it incorrectly

An inverse function is defined as follows:
[tex]f\placeholder{⬚}^{-1}(y)=x\Leftrightarrow f(x)=y[/tex]From, the graph we notice that:
[tex]f(4)=0[/tex]Applying the definition of the inverse function we have that:
[tex]f\placeholder{⬚}^{-1}(0)=4[/tex]