isaactorres31 isaactorres31

10-09-2019
Mathematics

contestada

f(x) = 3x + 9, find f^-1(x)

Respuesta :

winnie513 winnie513

10-09-2019

Answer:

y=x-9/3

Step-by-step explanation:

f(x)=3x+9

let f(x)=y

y=3x+9

change position of x & y

x=3y+9

rearrange:

x-9=3y

y=x-9/3

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