Help With Quiz 8 Algrebra

NOTE: when you see f-1 it is the inverse of f. For some reason the "-" isn't shown properly.
Question:
The graph of the function f is shown below.
Which grid shown the graph of the function f-1?
answer:
In our graph, we have the functions f(x)=y and f-1(x)=y
The thing we can do, is find some points of the f-1 graph.
We know that, if f(x)=y, then f-1(y)=x.
For x=1, y=f(1)=6, and f-1(y)=x <=> f-1(6)=1. So, we know one point of f-1, the (6,f-1(6)) <=> (6,1).
For x=6, y=f(6)=-7 and f-1(y)=x <=> f-1(-7)=6 So, another point of f-1 is (-7,6).

The only graph containing both of these points is A.
ANOTHER way (fast and easy) to find the f-1 graph, is to find the symmetric to x=y (see attachment)

I'll check the other questions as well

Two things wrong with your post. One, you didn't include a detailed topic title (next time, your post will get deleted automatically). Two, it's two questions per thread, not seven. I was kind enough to post the answer to one of them, but until you start following the rules, your posts will be ignored.