Question #N30
The function $f(x)$ is defined as $f(x) = \frac{x^2 - 4}{x - 2}$. For what value of $x$ is $f(x)$ undefined?
A. 0
B. 2
C. 4
D. -2
Correct Answer is: B
A function is undefined when its denominator is equal to zero. In this case, the denominator is $x-2$, so the function is undefined when $x-2 = 0$. Solving for $x$, we get $x = 2$.