Question

What’s the inverse function of f(x)=1/2x+7?

Answer 1

Answer:

$f ^{ - 1} (y) = \frac{y + 3}{2}$

Step-by-step explanation:

put y for f(x)

$y = \frac{1}{2} x - 3$

$y + 3 = \frac{1}{2} x$

$\frac{y + 3}{2} = x$

$x = \frac{y + 3}{2}$