Asked by Charlene Coleman on Jun 13, 2024

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Find the domain of the rational function. f(x) =9x−5f ( x ) = \frac { 9 } { x - 5 }f(x) =x59

A) (−∞,5) ∪(5,∞) ( - \infty , 5 ) \cup ( 5 , \infty ) (,5) (5,)
B) (−∞,9) ∪(9,∞) ( - \infty , 9 ) \cup ( 9 , \infty ) (,9) (9,)
C) (−∞,−5) ∪(−5,5) ∪(5,∞) ( - \infty , - 5 ) \cup ( - 5,5 ) \cup ( 5 , \infty ) (,5) (5,5) (5,)
D) (−∞,∞) ( - \infty , \infty ) (,)
E) (−∞,5) ∪(5,9) ∪(9,∞) ( - \infty , 5 ) \cup ( 5,9 ) \cup ( 9 , \infty ) (,5) (5,9) (9,)

Domain

The set of all possible input values (x-values) for which a given function is defined.

Rational Function

A function characterized by the ratio of two polynomials.

  • Distinguish and explain the domain of rational functions.
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KR
Katie RannoJun 14, 2024
Final Answer :
A
Explanation :
The denominator cannot be equal to zero, so the function is undefined at $x = 5$. Therefore, the domain is all real numbers except $5$, which is represented by the interval notation $( - \infty , 5 ) \cup ( 5 , \infty )$.