Part2 Chapter1 Algebra2

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Part one was the beginning of a graph showing the rate of speed of an aircraft descending down at 600 feet per minute starting at 10,000 feet but the table only goes to 5 minutes; therefore, stops at an altitude of 7,000 feet. However, the graph goes past 10 minutes of 4,000 feet in altitude. They called the height (a) line upward and sideways line straight to the right zero feet out past the 10 minutes and named it (t). The equation comes out as a = 10,000 -600t. It is Figure 1.1 in the book." The model can be used to answer questions such as "What is the altitude of the aircraft after 4 minutes?" and "How long will the aircraft take to reach an altitude of 2,000 feet?" The model above is an example of a LINEAR MODEL. The defining feature of a linear model is that it has a constant rate of change. This can be seen in the table by noting that the difference in altitude for any two consecutive minutes is -600 feet (negative because the altitude is decreasing). The graph of a linear will be a line (hence the name). The equation will involve variables to the first power only. Linear models have the advantage of being the simplest of models to use and understand while at the same time being capable of describing a wide variety of real-life problems. Part 3 of this Chapter will go into Solving LINEAR EQUATIONS like the one shown.