Instructions: Experiment with the SETTINGS window as instructed and answer the following questions about the GRAPH and CALCULATIONS windows.

a$)$ If needed, restore the initial settings by clicking the Perfect Income Equality button. Then, move the slider labeled $"$A$"$ to the left. Which of the following describes what havoens on the graph?

Point $A$ in the graph moves dow

b$)$ Restore the initial settings by clicking the Perfect Income Equality button. Move the slider labeled $"$B$"$ toward $0.$ Which of the following is correct?

The B slider cannot be moved below the level of

c$)$ Click the Perfect Income Inequality button, and then move the slider for points C and D so that the $"\%$ Income" column in the CALCULATIONS window reads, from top to bottom, $0\%,0\%,20\%,50\%,100\%.$ Report the value of the Gini Coefficient.

Gini Coefficient $=$