Math urgent needed

20150612232144m7_graphing_tips.docx

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Module 7 Graphing Tip Sheet

Using Graphmatica, you can graph a pair of equations ONE AT A TIME. It will redraw both equations then you enter the second or even third line. Here is an example of how it can plot INEQUALITIES - 8.5, problem 57. Note that it is a little hard to see the triangular region that the problem implies:

Notice also only the third inequality is shown in the “function window”. You may need to superimpose MS Word Shapes (Insert). You can also experiment with colors to improve the contrast needed to show the triangle region that is the solution to the system of inequalities.

The problem in Section 8.6 requires that you find corners of the region (intersections of two lines). See how highlighting a corner and then Zooming lets you get very good estimates. It is not the same as solving, but a lot faster.