Question

Find f-¹(x) for the function:
f(x) = -x/3 +4
f−¹(x) = [?]x + []}]

Answer 1

`f^(-1)(x)=-3x+12`

Explanation:

`\displaystyle f(x)=-(x)/(3)+4\\ \\y=-(x)/(3)+4\\\\x=-(y)/(3)+4\\ \\x-4=-(y)/(3)\\ \\3x-12=-y\\\\-3x+12=y\\\\f^(-1)(x)=-3x+12`

Make sure to swap the variables to get the inverse function and solve for the output.