Review your basic math operations. To start learning algebra, you'll need to know basic math skills such as adding, subtracting, multiplying and dividing. ...
The coordinated of A would be 1,1. Instead of going through the trouble of mentally moving the entire thing, just focus on the one you need to know the answer to, aka A.
The description does not have the curves overlapping at any point, so there is only one output for each input. That makes the graph be the graph of a function.