Question

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What is the Domain and range?????

Answer 1

Domain:
`x \ge 0`

Domain in interval notation: [0, infinity)

This is because the domain is the set of all allowed x inputs. In this case, x = 0 is the smallest and we include this endpoint. Any x value x = 0 or larger is part of the domain (since the graph stretches' on forever to the right)

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Range:
`y \ge 2`

Range in interval notation: [2, infinity)

For similar reasoning as the domain, but now we consider the possible y output values. Here y = 2 is the smallest and we include it. Note the square bracket for interval notation means "include this endpoint". The curved parenthesis means "exclude this endpoint"