anonymous
  • anonymous
Find the domain and range of the relation and determine if it's a function or not. https://dl.dropboxusercontent.com/u/19479041/School/478541-5232012-123004-PM-386420606.png Answers: domain x > 1; Range y > 1; Yes it's a function domain: all real numbers; range: all real numbers ; Yes it's a function Domain: positive integers Range: positive integers; No it's not a function Domain x >= 0; Range y >= 1; No it's not a function
Mathematics
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SOLVED
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jamiebookeater
  • jamiebookeater
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OakTree
  • OakTree
So we can eliminate the last two options because we know that the graph shows a function, right? Since we don't have any "overlaps" when we do the vertical line test. Following so far?
anonymous
  • anonymous
Yes I knew that the last two weren't true.
OakTree
  • OakTree
Okay. Now the next step is easy. We know that the domain and range can't be all real numbers, because the graph is limited to a particular region of the Cartesian plane. It doesn't even go outside the first quadrant! So we know that the answer is answer choice a.

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anonymous
  • anonymous
Thank you so much! That was what I thought I was just making sure.
OakTree
  • OakTree
Great. Glad to help.

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