SOLUTION: if f(x)=3x-1, what is the value of f^-1(x)?

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Question 763334: if f(x)=3x-1, what is the value of f^-1(x)?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
f f(x)=3x-1, what is the value of f^-1(x)?
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Write the equation as: 3x-1 = y
Swap x and y and solve for y
3y - 1 = x
add 1 to both sides
3y = x + 1
divide both sides by 3
y = x%2F3 + 1%2F3
therefore
f%5E-1(x) = x%2F3 + 1%2F3