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Which of the following expressions is the inverse of the function y = 3x + 4?
y = 3x − 4 y = −3x − 4 y equals quantity x minus 4 divided by 3 y equals quantity x plus 4 divided by 3

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GoddessofDork

So here are the steps to finding the inverse of a function:

  1. Switch the positions of x and y
  2. Solve for y.

So firstly, let's apply the first step: [tex]x=3y+4[/tex]

Next, let's solve for y. Subtract 4 on both sides of the equation: [tex]x-4=3y[/tex]

Next, divide both sides by 3 and your answer will be [tex]\frac{x-4}{3}=y[/tex]

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