SOLUTION: Is (city,area code) a function? Is (person,birth date) a function? Is (first name, last name) a function? Is (student, school ID number) a function?

Algebra ->  Functions -> SOLUTION: Is (city,area code) a function? Is (person,birth date) a function? Is (first name, last name) a function? Is (student, school ID number) a function?      Log On


   

Question 341175: Is (city,area code) a function?
Is (person,birth date) a function?
Is (first name, last name) a function?
Is (student, school ID number) a function?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Is (city,area code) a function?
No, because a city may have many area codes in it.
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Is (person,birth date) a function?
Yes, because each person has only one birth date
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Is (first name, last name) a function?
No, because a given 1st name may have several last names associated.
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Is (student, school ID number) a function?
Yes, because each student has only one school ID number.
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Cheers,
Stan H.