1 Answer

Shluvme · Answer 1 · 2019-10-13T23:59:47+0000

To find the inverse, we need to solve for x in term of f(x)

f(x) = 5x + 4
5x + 4 = f(x)

Solve for x
5x + 4 = f(x)
5x = f(x) - 4
x =
$\cfrac{f(x)-4}{5}$

x acts as the invers of f(x), and f(x) is the invers of x, so the inverse function will be
f⁻¹(x) =
$\cfrac{x-4}{5}$

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