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Domain = set of possible or allowed x inputs
Range = set of possible y outputs, based on the domain
For this particular graph, the domain as an inequality is
Use "or equal to" when we have a filled in endpoint. Open hole endpoints will not have "or equal to".
The inequality condenses to the interval notation (-3, 1]
The curved parenthesis excludes the endpoint (because of the open hole)
The square bracket includes the endpoint (due to the filled in endpoint).
The range as an inequality is
We include y = -3, but exclude y = 2 because of the open hole.
This condenses to the interval notation [-3, 2)
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