-The table above shows how the number of books Katie buys each year depends on her income.
a) What kind of relationship exists between Katie's income and the number of books she purchases?
b) Plot the relationship between Katie's income and the number of books she purchases in the above figure. Measure income along the vertical axis and the number of books along the horizontal axis. Be sure to label the axes.
c) What is the slope of the relationship between $50,000 and $70,000 of income?
d) What is the slope of the relationship between $90,000 and $110,000 of income?
e) Comment on the similarity or dissimilarity of your answers to parts (c) and (d).
Definitions:
Principal
The original sum of money borrowed in a loan or the initial amount of investment, not including interest or profits.
Simple Interest
Interest assessed only on the base amount, or on whatever portion of the base amount has not been settled.
Interest
Payment made for the use of borrowed money, calculated as a percentage of the principal sum.
Simple Interest
Interest calculated only on the initial amount of money (principal), not on the interest accrued over time.
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