Question

Which function is the reverse of f(x)=-5x-4

Answer 1

$f(x)=-5x-4\\ y=-5x-4\\ 5x=-y-4\\ x=-\dfrac{1}{5}y-\dfrac{4}{5}\\\\ f^{-1}(x)=-\dfrac{1}{5}x-\dfrac{4}{5}$