Question

MEDAL // IS THIS C or B???
Consider the following scenario describing the residents of Charlestown: The list pairs resident's ages with their zip codes.

Does this scenario represent a function?

No, because people who are the same age can have different zip codes
No, because people who have the same zip code can be different ages
Yes, because people who are the same age can have different zip codes
Yes, because people who have the same zip code can be different ages

Answer 1

@tkhunny is this c or b? :)

Answer 2

@zepdrix is this c or b? :)

Answer 3

@mathmate is this c or b? :)

Answer 4

Looks like we need more info from the question...

Answer 5

@milo123
Functions work with independent(x) and dependent(y) variables.
Most of the time, x is the independent variable and y is the dependent variable.
When it comes to discrete things like age and zip code, it is possible to tabulate one or the other as the independent variable.
Looking at the tabulation will help us decide which one is independent.
A function requires that for any given value of the independent variable, there is only one value for the dependent variable.
Based on this, you should be able to make the choice, which we cannot do because we do not see the table itself.

Answer 6

there is no table @mathmate @steve816 :/

Answer 7

Many people can have the same zip code, hence different ages.
Many people can have the same age, but live in different places.
So the answer hinges on the weak information derived from:
"The list pairs resident's ages with their zip codes."
You will have to make a guess on which one is the independent variable. Perhaps your teacher has explained how to interpret a statement like the one in the question.