Question

If g(x) is the inverse of f(x) and f(x)=4x+12, what is g(x)?

Answer 1

$Answer: \\ x = 4y + 12 \\\Leftrightarrow 4y = x - 12 \\ \Leftrightarrow y = \frac{x - 12}{4} \\ \Rightarrow g(x) = \frac{x - 12}{4}$