Question

Find the inverse of the function.
y=x+9

Answer 1

Answer: $y=x-9$

Step-by-step explanation:

To find the inverse of a function you must first swap the places of x and y

$x=y+9$

Now solve for y

Step 1: Flip the equation.

$y+9=x$

Step 2: Subtract 9 from both sides.

$y+9-9=x-9\\y=x-9$