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3 years ago

15

Please help asap 25 pts

1 answer:

Leviafan [203]3 years ago

3 0

using the vertical line test

Graph b is a function

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Write the inverse function for the function, ƒ(x) = x + 4. Then, find the value of ƒ -1(4). Type your answers in the box.

lesya [120]

The inverse is:

$f^{-1}(x) = x-4$

Further explanation:

Given function

$f(x) = x+4$

<u>Step 1: Replacing f(x) with y</u>

$y = x+4$

<u>Step 2: Replacing x with y and y with x</u>

$x = y+4$

<u>Step 3: Solving the equation for y</u>

$x = y +4\\x -4 = y+4-4\\y = x-4$

<u>Step 4: Replacing y with f-1(x)</u>

$f^{-1}(x) = x-4$

So, the inverse is:

$f^{-1}(x) = x-4$

Keywords: Functions, Inverse of function

Learn more about inverse of functions at:

#LearnwithBrainly

3 0

3 years ago