Where Is My Car’s Oxygen Sensor 1 Bank 2 Located

What does bank 1 and 2 mean? How can I tell which is which?

My car has the “Service Engine Soon” light on. I scanned it and got the message “…the response time for oxygen sensor 1 in bank 2 was too slow during testing.” What does this mean? Thanks!
Sorry… 98 Infiniti i30

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