SOLUTION: If "f" is a one-to-one function and f(6)=-8,f(-8)=-7, and f(-7)=6, find f^-1(-7) a. -6 b. -8 c. -7 d. 6 e. 7

Algebra ->  Functions -> SOLUTION: If "f" is a one-to-one function and f(6)=-8,f(-8)=-7, and f(-7)=6, find f^-1(-7) a. -6 b. -8 c. -7 d. 6 e. 7       Log On


   

Question 470114: If "f" is a one-to-one function and f(6)=-8,f(-8)=-7, and f(-7)=6, find f^-1(-7)
a. -6
b. -8
c. -7
d. 6
e. 7


Found 2 solutions by stanbon, jim_thompson5910:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
If "f" is a one-to-one function and f(6)=-8,f(-8)=-7, and f(-7)=6,
find f^-1(-7)
----
f^-1(-7) = -8
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Cheers,
Stan H.
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a. -6
b. -8
c. -7
d. 6
e. 7

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
... Start with the given equation


... Apply to both sides.


... Since f is one-to-one, (ie f and f inverse cancel each other out)


So