1. After changing the inequalities, what are your initial observations of the shading? (Where is there no shading, some shading, darker shading?)[br][br]2. Are there any differences with lines? If so, what do the two types of lines represent?[br][br]3. Write down the intersection values for this system of inequalities. Are all three regions shaded at this point? (i.e. decide whether each point is a boundary point for the system of inequalities).[br][br]4. Change the inequalities and boundary equations and answer numbers 1-3 again.[br][br]5. Summary: How did you decide whether a point was a boundary point for all three regions?[br][br][br][br][br]Revised original worksheet by Terry Lee Lindenmuth