1 year ago

…………..HELP……………………………..

Mathematics

1 answer:

stich3 [128]1 year ago

4 0

Answer:

Step-by-step explanation:

Let f(y)=x.

$x=\frac{1}{3}-\frac{1}{21}y \\ \\ x-\frac{1}{3}=-\frac{1}{21}y \\ \\ y=-21x+7 \\ \\ f^{-1}(x)=-21x+7$

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