Respuesta :

i got y-9/3  im pretty sure its right.
y = 3x-9

first interchange x and y

x = 3y -9

solve for y

x + 9 = 3y

x/3 + 3 = y

y is the inverse, you can call it y^-1

y^-1 = x/3 + 3

hope this helps

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