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ss7ja [257]
3 years ago
12

What is the inverse of the function f of x equals 1/9 x + 2

Mathematics
1 answer:
blsea [12.9K]3 years ago
3 0
Converting an equation into inverse function, we need to interchange x with the y.
f(x) = 1/9x + 2
y = 1/9x + 2
Interchange x and y

x = 1/9y + 2
Get the y.

-1/9y = -x + 2
1/9y = x - 2
y = 1/9x - 2/9

So the final answer is
<span>y = 1/9x - 2/9</span>
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The check digit is 7.

Step-by-step explanation:

Check digit can be calculated by the following way:

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             Total = 0 + 2 + 4 + 6 + 7 + 9 + 3 + 6 + 1 + 6 + 3

             Total = 47

  •      Add the digits at odd starting from left, double this amount and          finally add it with the total from step 1.

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     Adding it with the total from step 1, we get

        Total = 36 + 47

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