The domain of the given rational function is:
D = {x ∈ R| x ≠ -9}
<h3>
How to find the domain of a rational function?</h3>
When given a rational function, we first need to simplify it to its simplest form, (the given rational function is already on the simplest form).
At that point, we identify the domain of the rational function as the set of all real numbers minus the numbers that make the denominator of the rational function to be zero.
In this case, the denominator is:
x + 9
It is zero when:
x + 9 = 0
x = -9
So, the domain of the rational function is the set of all real numbers except for x = -9, it is:
D = {x ∈ R| x ≠ -9}
If you want to learn more about rational functions:
brainly.com/question/1851758
#SPJ1
