dollyayesha2345
Junior Member
- Joined
- Oct 28, 2021
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- 57
In Exercises 21-24, consider the set of all ordered pairs (x,y) as described. Is the set a relation? Is it a function?
21. (x,y), where x is the name of a telephone subscriber in your town and y is the subscriber's telephone number.
22. (x,y), where x is the name of each mother in your town and y is the name of her child.
23. (x,y), where x is each man in London, England and y is his right thumb pint.
24. (x,y), where x is any nonvertical line in the coordinate plane and y is its slope.
MY ANSWERS:
21. Yes, it is a relation and function
22. Yes, it is a relation
23. No neither relation nor function
24. Both relation and function
Note: Please do not judge me. I don't have notes, textbook anything at my end all I have is these 4 questions. I have shared what I think is the correct answer. If I'm wrong please correct me and do let me know how to prove my answer.
21. (x,y), where x is the name of a telephone subscriber in your town and y is the subscriber's telephone number.
22. (x,y), where x is the name of each mother in your town and y is the name of her child.
23. (x,y), where x is each man in London, England and y is his right thumb pint.
24. (x,y), where x is any nonvertical line in the coordinate plane and y is its slope.
MY ANSWERS:
21. Yes, it is a relation and function
22. Yes, it is a relation
23. No neither relation nor function
24. Both relation and function
Note: Please do not judge me. I don't have notes, textbook anything at my end all I have is these 4 questions. I have shared what I think is the correct answer. If I'm wrong please correct me and do let me know how to prove my answer.