Question

rmula1" title="f (x) = 3x - 5 what is the inverse relation
" alt="f (x) = 3x - 5 what is the inverse relation
" align="absmiddle" class="latex-formula">

Answer 1

Replace f(x) with y
switch x and y
solve for y
replace y with f⁻¹(x)

f(x)=3x-5
y=3x-5
x=3y-5
x+5=3y
diide 3
$y= \frac{x+5}{3}$
$f^{-1}(x)= \frac{x+5}{3}$