You can
put this solution on YOUR website! f(x)=6x
x=

now both sides divide by 6

so, iverse function is:
definition:
If ƒ is a function whose domain is the set X, and whose range is the set Y, then the inverse of ƒ is the function ƒ–1 with domain Y and range X, defined by the following rule:
if y=f(x), then