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Ch 2 - Weekly Earnings

# Ch 2 - Weekly Earnings - 4 In#2 above you wrote an equation...

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Name MATH 111 – Sec. 009 Chapter 2: Linear Functions Goals of Chapter 2 Calculate and interpret average rates of change Understand how representations of data can be biased Recognize that a constant rate of change denotes a linear relationship Construct a linear function given a table, graph or description Derive by hand a linear model for a set of data WEEKLY SALARY The average weekly earnings for workers in the U.S. from 1980 to 1992 are shown in the table below. Using this table, complete the activities that follow. Years after 1980 ( t ) Weekly Earnings ( W ) 0 \$270 3 \$313.80 6 \$357.60 9 \$401.40 12 \$445.20 1. Is the table above a linear function? How do you know? 2. Find an equation for weekly earnings, W , as a function of t , years after 1980. What is an appropriate domain for this function? 3. Express the equation for #2 using only units of measure.

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Unformatted text preview: 4. In #2 above, you wrote an equation for this application (weekly salary). What is the domain of the equation for this application ? What is the range of the equation for this application ? What is the domain of the abstract equation ? What is the range of the abstract equation ? 5. The equation that you wrote in #2 above should have been a linear equation. What is the slope of your equation? Using a complete sentence, interpret the slope in the context of this application. (Don’t forget the units.) What is the vertical intercept of your equation? Using a complete sentence, interpret the vertical intercept of this application. (Don’t forget the units.) 6. Using the function from #2, find the following: F(4.5) = The weekly salary in 1999 = ....
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Ch 2 - Weekly Earnings - 4 In#2 above you wrote an equation...

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