Which of the following is equivalent to 36 Superscript negative one-half?
2 answers:
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Answer: Choice A
Domain = all real numbers
Range = real numbers greater than or equal to -4
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Explanation:
The domain is the set of allowed x inputs of a function.
We can replace x with any number we want to get some output for y = f(x)
This tells us the domain is the set of all real numbers.
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The range is the set of numbers y such that
In other words, we can have y = -4 or y > -4
This is because y = -4 is the lowest output possible, as indicated by the vertex point.