Question

What is the inverse of the function f(x) = 4x + 8?

o h(x) = -x-2
Tt it
h(x) =
X-
to the
O
h
(x) =
x + 2

Answer 1

eplace f(x) with y

swtich x and y

solve for y

replace y with f⁻¹(x)

f(x)=4x+8

y=4x+8

x=4y+8

x-8=4y

1/4x-2=y

y=1/4x-2

f⁻¹(x)=1/4x-2

none of the above