Question

What is the domain of 16/13-x

Answer 1

The domain of the function is the set of input or argument values for which the function is real and defined.

$13-x=0 x=13$

So the function is not defined when x=13.

thus the domain of the function is $x\neq 13$

In Interval notation, $(-\infty, 13)U(13, \infty)$

Answer 2

It would be all real numbers