Ivan61615 Ivan61615
  • 15-02-2019
  • Mathematics
contestada

If f(x)=1/9 x-2,what is f-1(x)?

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wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 16-02-2019

Answer:

f^-1(x) = 9x+18

Step-by-step explanation:

To get the inverse of a function, we exchange x and y then solve for y

y = 1/9x -2

Exchange x and y

x = 1/9y -2

Add 2 to each side

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

x+2 = 1/9y

Multiply by 9

9(x+2) = 9*1/9y

9x+18 = y

f^-1(x) = 9x+18

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