anonymous
  • anonymous
Find the domain and range of the relation and determine whether it is a function. [image below] A. domain: x > 1; range: y > 0; Yes, it is a function. B. domain: all real numbers; range: all real numbers; Yes, it is a function. C. domain: positive integers; range: positive integers; No, it is not a function. D. domain: x ≥ 0; range: y >1; No, it is not a function.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
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anonymous
  • anonymous
i would say b
mathstudent55
  • mathstudent55
Notice the curve gets closer and closer to x = 1, but never quite becomes x = 1. As x becomes larger, it keeps going forever. That shows a domain of x > 0. Now look at it for y in a similar way as I did for x to find the range. Finally, the question of if it is a function can be answered by the vertical line test. If you look at the graph of a relation, and you want to know if it is a function, think of a vertical line moving horizontally from left to right. If the line ever touches more than one point on the graph at once, it is not a function. If the relation is a function, the vertical line only touches one point of the curve at a time.

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anonymous
  • anonymous
I think it is A, @mathstudent55 can you check my answer or explain why I am wrong?
mathstudent55
  • mathstudent55
You are correct. A is the answer. Good job!
anonymous
  • anonymous
thanks so much! you really helped me! sorry i was gone so much though, i am quite busy lately
mathstudent55
  • mathstudent55
You're welcome.

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