Suppose Lin and her neighbor share the same birthday, but Lin is 3 years older. You can find the neighbor's age by taking Lin's age and subtracting 3.
If Lin's age is represented by L, and her neighbor's age is represented by n, then the
equation n = L-3 describes the relationship.
In this relationship, which variable do you think might be the dependent variable and which
would be the independent variable? Why?