3. KEY APPENDIX QUESTION The following table contains data on the relationship between saving and income. Rearrange these data into a meaningful order and graph them on the accompanying grid. What is the slope of the line? The vertical intercept? Interpret the meaning of both the slope and the intercept. Write the equation that represents this line. What would you predict saving to be at the $12,500 level of income?

Income Saving

(per year) (per year)

$15,000 $1,000 0 –500 10,000 500 5,000 0 20,000 1,500