videogamer101 videogamer101

04-10-2020
Mathematics

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Verify if f(x) = 1/2x - 2 and g(x) = 2x + 4 are inverses.

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jcherry99 jcherry99

04-10-2020

Answer:

Step-by-step explanation:

Try using g(x)

Let g(x) = y

y = 2x + 4

Interchange x and y

x = 2y + 4

Subtract 4 from both sides

x - 4 = 2y

Divide by 2

x/2 - 4/2 = 2y/2

y = x/2 - 2

This is exactly what f(x) is

So g(x) and f(x) are inverses.

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