Answer: Y=0 for sure, I'd need a more exact graph to tell you other ones.
You might get away with 0<=y<4
Step-by-step explanation: Asymptote is anywhere the graphs will never cross,
Step-by-step explanation:

The value of the 7 in the hundredths place is 10 the value of the 7 in the thousandths place. The value of the 7 in the tens place is 10 times the value of the 7 in the ones place. The value of the 7 in the hundreds place is 10 times the value of the 7 in the tens place.
Hope this helped!
Nate