Question

If f(x) = 5x - 1, then f-1 (x)

Answer 1

Step-by-step explanation:

$f(x) = 5x - 1$

$\:$

$y = 5x - 1$

$5y - 1 = x$

$5y = x + 1$

$y = \frac{x + 1}{5}$

${f}^{ - 1} (x) = \frac{x + 1}{5}$