Use the graph below to fill in the missing values.



$\displaystyle {f{{\left({0}\right)}}}=$

$\displaystyle {f{{\left({x}\right)}}}={0}\quad{x}=$

$\displaystyle {{f}^{{-{{1}}}}{\left({0}\right)}}=$

$\displaystyle {{f}^{{-{{1}}}}{\left({x}\right)}}={0}\quad{x}=$