Determine whether the given relationship defines a function

Determine whether the given relationship defines a function. If so, identify the independent and dependent variable and why the relationship is a function. The unemployment rate r in a particular country for month m during June - November 2003, defined by the table. Choose the correct answer below. Yes. The independent variable is m and the dependent variable is r. It is a function because there is one unemployment rate r for each month m. It is not a function because there is more than one unemployment rate r for each month m. It is not a function because there is one unemployment rate r for each month m. Yes. The independent variable is m and the dependent variable is r. It is a function because there is one month m for each unemployment rate r.

Solution

since no month has mroe than one unemployment rate so given table represents a function.

Hence Choice A is correct.