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…………..HELP……………………………..

…………..HELP……………………………..-example-1
User FiqSky
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1 Answer

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Answer:

C

Explanation:

Let f(y)=x.


x=(1)/(3)-(1)/(21)y \\ \\ x-(1)/(3)=-(1)/(21)y \\ \\ y=-21x+7 \\ \\ f^(-1)(x)=-21x+7

User Daniel Buckmaster
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