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)

Question

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)

Quizplus · Accepted Answer

In equations modeling graphs where one variable depends on another, the independent variable (t) typically represents time, such as years, while the dependent variable (y) represents the quantity that changes over time, such as population in millions.

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

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