For what x is the function defined? $$y = \sqrt { - 9 x }$$
A) $0 \leq x$
B) $x \geq 3$
C) $x \neq 9$
D) $0 \geq x$
E) The function is undefined for any x.

Name: For what x is the function defined? \[y = \sqrt { - 9 x }\] A) $0 \leq x$ B) $x \geq 3$ C) $x \neq 9$ D) $0 \geq x$ E) The function is undefined for any x.
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Question

Quizplus · Accepted Answer

For the square root function to be defined, the expression inside the square root must be greater than or equal to 0. Thus, $-9x \geq 0$, which simplifies to $x \leq 0$, matching choice D.

For What X Is the Function Defined y=−9xy = \sqrt { - 9 x }y=−9x​

For What X Is the Function Defined $y = \sqrt { - 9 x }$