The Following Graph Shows the Populations of the Metropolitan Areas $y = f ( t )$

question 365

Multiple Choice

The following graph shows the populations of the metropolitan areas of City X and City Y over six years.
-If equations of the form y $y = f ( t )$ f(t) were determined that modeled either of the two graphs, then the variable t would represent _______ and the variable y would represent _______.

• A) City Y; City X
• B) City X; City Y
• C) population (in millions); year
• D) year; population (in millions)