Question: Identify each relation that is also a function. For each relation that is not a function, explain why not. a. independent variable: city dependent variable:

Identify each relation that is also a function. For each relation that is not a function, explain why not.

a. independent variable: city dependent variable: area code.
b. independent variable: any pair of whole numbers dependent variable: their greatest common factor.
c. independent variable: any pair of fractions dependent variable: their common denominator.
d. independent variable: the day of the year dependent variable: the time of sunrise

218 Minneapolis 320 612, 763, 952 2 Pauf 651 507

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