HI. So I have been stuck on this question for about an hour now and I still don't know what to do. My teacher is teaching us about Inverse Functions and I'm puzzled. The question is about finding the inverse function and its domain and range for f(x)=3x+4. I did the inverse function but I probably did it wrong. I got f(x)=4/3+x/3. My teacher also gives us the answers but he didn't put the inverse functions just the domain and range. I plugged in the domain but I don't get anywhere near his ranges. The domain is 0,1,0,2. I also thought that a function couldn't have 0 twice as an x value or it wouldn't be a function. Can someone please explain this? Thank you.

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