Question

What is the domain of the function y=3/x?
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Answer 1

Answer: Choice A)  $-\infty < x < \infty$

We can plug in any x value we want. The domain is the set of all real numbers. We don't have to worry about applying the square root of a negative value since negative values are allowed in cube roots.

For instance, $\sqrt[3]{-64} = \sqrt[3]{(-4)^3} = -4$