EXTRA CREDIT (10 POINTS)

 

WRITING LINEAR FUNCTIONS

 

 

 

The following table shows CO2 concentration levels beginning in 1965.

 

 

Year

CO2 concentration (ppm)

1965

319.9

1970

325.5

1980

338.5

1990

354.0

1995

360.7

 

 

          The set of data in the table will generate a certain number of DIFFERENT linear functions. Your mission is to find all of them. Here is what you must do:

 

1.     Convert the table to a table with correct t values and ordered pairs, as we have done in class.

2.     Choosing two points at a time, find the slope in decimal form rounded to the nearest hundredths, e.g. 2.34.

3.     Write the function in point-slope form and then convert it to slope-intercept form.

4.     All numbers should be rounded to the nearest hundredths place.

5.     Suggestion: work in an organized fashion to ensure that you find all possible linear functions for the set of data.

6.     Your work is due Wednesday, 16 February 2005.

7.     The work you turn in should be legible and neatly organized.