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mel-nik [20]
3 years ago
10

What is the inverse of the function below? f(x)= x/4 -2

Mathematics
1 answer:
user100 [1]3 years ago
3 0

f(x)=\dfrac{x}{4}-2\to y=\dfrac{x}{4}-2\\\\\text{Interchange the y and the x}\\\\x=\dfrac{y}{4}-2\\\\\text{Solve for y}\\\\\dfrac{y}{4}-2=x\qquad|+2\\\\\dfrac{y}{4}=x+2\qquad|\cdot4\\\\y=4(x+2)

Answer:\ C.\ f^{-1}(x)=4(x+2)

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