Find the domain of $f ( x ) = \sqrt { 8 - x }$ .
A) $[ 8 , \infty )$
B) $( - \infty , 8 ]$
C) $[ - 8 , \infty )$
D) $( - \infty , - 8 ]$

Question

Quizplus · Accepted Answer

The domain of $f(x) = \sqrt{8 - x}$ consists of all $x$ values for which $8 - x$ is greater than or equal to 0, because the square root function is defined for non-negative numbers. Solving $8 - x \geq 0$ gives $x \leq 8$, which corresponds to all real numbers less than or equal to 8, or $(- \infty, 8]$.

Find the Domain Of f(x)=8−xf ( x ) = \sqrt { 8 - x }f(x)=8−x​

Find the Domain Of $f ( x ) = \sqrt { 8 - x }$