Question

Find the domain and the range of the function f defined by f(x)= |x - 4 |/x-4​

Answer 1

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \sf{f(x) = \frac{ |x - 4| }{x - 4} }$

$\sf{domain \: = all \: real \: numbers \: except \: 4}$

$\sf{range \: = {1,-1}}$