What is the inverse function of d(x)= 2x-4
Formula for inverse function:\(d^{-1}(y)=?\\y=2x-4\\2x=y+4\\x= \frac{y+4}{2}\\ d^{-1}(y)= \frac{y+4}{2}\)
\(y=2x-4 \\ Replace \ x \ by \ y:\\ x=2y-4\\ Isolate \ y:\\ 2y=x+4\\ y=\frac{x+4}{2}\\ \\ \boxed{d^{-1}(x)=\frac{x+4}{2}}\)
