If f(x) = [x] - 5, what is f(8.6)?

Gggģcawrygr3ezt9d hu and the other countries have been working to make it easier to box up their homes in an area where the government has not yet decided which countries will have the option of the government

The correct answer is x=-1, usually the answer would be y=something but because there is no slope or y intercept, the answer is x=-1