Answer:
Option C is correct.
All real numbers except 9
Step-by-step explanation:
Given the function: [tex]f(x) = \frac{x}{x-9}[/tex]
To find the domain of the function:
Domain of a function is the set of all the possible values of the independent variable.
Since, the given function is a rational function and the denominator cannot equal zero because it would be undefined.
therefore, the domain of the function f(x)is, all real numbers except 9
