In 1980, median family income was about $19,000, and in 2000 it was about $41,000.

Question

(a*) Find the slope of the line passing through the points (1980,19000 and (2000,41000). M=?

(b*) Interpret as a rate of change. Choose the correct answer below.

 

 

(a) The median family increases by $1100 between 1980 and 2000.

(b) The median family income is decreasing at the rate of $1100 per year.

 

 

 

(c) The median family income is increasing at the rate of $1100 per year.

(d)  The median family decreases by $1100 between 1980 and 2000.

 

 

 

(c*) If this trend continues, estimate the median family income in 2002 will be what in dollars?

 

 

 

 

 

Answer 1

Jamal - hints for answering

- You need to start with the total change of median income between 1980 and 2000.

- Then use the number of years over which that change occurred.