Use the graph to find the domain and range using interval notation.

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ucne3

Mathematics

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Domain is  the range of x - values of the graph. Here the graph extends indefinitely on both ends. So the domain is ( - infinity, infinity ).

Range is the range of y - values of the graph. Here the lowest point on the graph is (0, -2). Hence the lowest y value is -2.  Since there is no highest point on the graph, the range is [ -2, infinity).

Yes, the graph is a function because it passes the vertical line test. When you draw a vertical line, it passes through the graph only once.

Please let me know if you need any clarification. I'm always happy to answer your questions.


Anonymous
I was having a hard time with this subject, and this was a great help.

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