Question #N850
If the expression $\frac{2x+3}{x-1}$ is undefined, what is the value of $x$?
A. -1
B. 1
C. $\frac{3}{2}$
D. $\frac{-3}{2}$
Correct Answer is: B
A fraction is undefined when the denominator is equal to zero. So, we set the denominator, $x-1$, equal to zero and solve for $x$: $x-1 = 0$. Adding 1 to both sides of the equation gives $x = 1$.