SOLUTION: Find y if log1/3^9=y I know the answer is -2 thanks to the back of the book, I just can't seem to figure out how to do this exactly. Thanks

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Question 266092: Find y if log1/3^9=y
I know the answer is -2 thanks to the back of the book, I just can't seem to figure out how to do this exactly.
Thanks
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Find y if log1/3^9=y
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If the base is 1/3:
y+=+log%28%281%2F3%29%2C9%29
%281%2F3%29%5E2+=+1%2F9
%281%2F3%29%5E-2+=+9
= -2