Question 763334
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/3}}} + {{{1/3}}}
therefore
{{{f^-1}}}(x) = {{{x/3}}} + {{{1/3}}}