Answer:
(f-1)
Step-by-step explanation:
If you substitute a for (f-1) you get the expression...
The answer is actually A.
No. A function maps one input to exactly one output. The given relation maps 1 to both 1 and -1, as indicated by the pairs (1, 1) and (1, -1).
C
Parallel line slopes are always the same.
