What is the proper notation for cartesian coordinates with decimals in your native language?

Question

For simple integers, (1, 2) is what most people are taught in elementary school. This appears to be true regardless or whether their language's decimal separator is a period (.) or a comma (,).

But what happens if we are dealing with decimal coordinates? What is the proper notation in your native language? I have struggled to find authoritative sources on the subject for French, in particular. I found this, but geographical coordinates are a separate question.

Here are the options I found:

1. (5,4, 3,2) 5. (5.4, 3.2)
2. (5,4 3,2) 6. (5.4 3.2)
3. (5,4; 3,2) 7. (5.4; 3.2)
4. (5,4;3,2) 8. (5.4;3.2)