Start by solving for x.
y = log₃x
x = 3^y
Now 'rename the x and y'.

f ⁻¹(x) = 3^x

Notice that y = π² is a horizontal line. What is the inverse of a horizontal line?

y = 6^2x
2x = log₆y

$x=\frac{\text{log}_6y}{2}$

f ⁻¹(x) = ____________

Refer to hint in part (b).

Before you convert to a logarithm, subtract k from both sides.