Tayngeridn
Answered

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What is the inverse function of d(x)= 2x-4

Sagot :

Luanaidn
Formula for inverse function:
[tex]d^{-1}(y)=?\\y=2x-4\\2x=y+4\\x= \frac{y+4}{2}\\ d^{-1}(y)= \frac{y+4}{2} [/tex]
Ryan2idn
[tex]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}}[/tex]
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