What inputs are defined for the expression? $$\frac { 8 } { x - 7 }$$
A) $R, x \neq - 7$
B) $R , x \neq 7$
C) $R , x \neq - 8$
D) $R , x \neq 0$
E) $ R , x \neq 8$

Question

What inputs are defined for the expression? $$\frac { 8 } { x - 7 }$$
A) $R, x \neq - 7$
B) $R , x \neq 7$
C) $R , x \neq - 8$
D) $R , x \neq 0$
E) $  R , x \neq 8$

Quizplus · Accepted Answer

The expression is undefined when the denominator is equal to zero, which occurs when x - 7 = 0 or when x = 7. Therefore, the input must exclude x = 7, which is only satisfied by choice B. The other answer choices exclude values that do not affect the denominator.

What Inputs Are Defined for the Expression 8x−7\frac { 8 } { x - 7 }x−78​

What Inputs Are Defined for the Expression $\frac { 8 } { x - 7 }$