I can't figure this out someone pls help!

Mathematics

1 answer:

Dominik [7]3 years ago

6 0

Answer:

f⁻¹(x) = 2x - 8
f⁻¹(4) = 0

Step-by-step explanation:

You can find an inverse function by interchanging x and y, then solving for y.

Original function:

y = (1/2)x +4

With x and y interchanged:

x = (1/2)y +4

Subtracting 4 gives ...

x -4 = 1/2y

Multiplying by 2 gives ...

2x -8 = y

Then the inverse function is written ...

f⁻¹(x) = 2x - 8

Evaluating this for x=4, we get ...

f⁻¹(4) = 2·4 -8 = 0

_____

It looks like your answer boxes are filled with ...

a0: 2
a1: -
a2: 8
a3: 0

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MArishka [77]

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