Ross Carrillo
08/06/2024 · Middle School
2. Find the domain of the function. Express your answer in interval notation. \[ g(x)=\frac{x-3}{x+4} \]
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Step-by-step Solution
To find the domain of the function \( g(x) = \frac{x-3}{x+4} \), we need to determine the values of \( x \) for which the function is defined. The function is a rational function, and it is undefined when the denominator is equal to zero.
First, we set the denominator equal to zero and solve for \( x \):
\[
x + 4 = 0
\]
Subtracting 4 from both sides gives:
\[
x = -4
\]
This means that the function \( g(x) \) is undefined at \( x = -4 \). Therefore, the domain of \( g(x) \) includes all real numbers except \( -4 \).
In interval notation, we express the domain as:
\[
(-\infty, -4) \cup (-4, \infty)
\]
Thus, the domain of the function \( g(x) \) is:
\[
\boxed{(-\infty, -4) \cup (-4, \infty)}
\]
Quick Answer
Domain: \( (-\infty, -4) \cup (-4, \infty) \)
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