Question 1012552
To find an inverse function, follow these steps
f(x) = 8x + 2  (put in y for f(x))
y = 8x + 2  (now switch y and x)
x = 8y + 2  (now solve for y again)
x - 2 = 8y
y = (1/8)(x-2)   (now put f^-1(x) in for y and you're done...)
f^-1(x) = (1/8)(x-2)