Find all numbers for which the rational expression is not defined.
-$\frac { c - 7 } { 9 }$
A) None
B) $c = 7$
C) $\mathrm { c } = - 7$
D) $\mathrm { c } = 0$

Question

Quizplus · Accepted Answer

The expression $\frac { c - 7 } { 9 }$ is defined for all real numbers because the denominator is a constant non-zero number (9). The value of $c$ does not affect the denominator, so there are no restrictions on $c$.

Find All Numbers for Which the Rational Expression Is Not c−79\frac { c - 7 } { 9 }9c−7​

Find All Numbers for Which the Rational Expression Is Not $\frac { c - 7 } { 9 }$