Question

Which expression represents the inverse of y = 12x - 3

Answer 1

Y = 12x - 3
12x - 3 = y
12x = y + 3
x = (y + 3)/12
y⁻¹ = (x + 3)/12

Invers of y is (x+3)/12

Answer 2

y = x + 3 / 12
This is your answer.