SOLUTION: For the following function, determine its inverse f-1. Use the switch and solve strategy: f(x) = 3x - 8

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Question 182019: For the following function, determine its inverse f-1. Use the switch and solve strategy:
f(x) = 3x - 8
Answer by eperette(173) About Me  (Show Source):
You can put this solution on YOUR website!
f(x) = 3x - 8 or y=3x-8
(1)switch x with y
x = 3y - 8
(2) solve for y
x = 3y - 8
x + 8 = 3y - 8 + 8
x + 8 = 3y + 0
(x + 8)/3 = 3y/3
(x + 8)/3 = y
or
f^-1(x)= (x + 8)/3