Chapter 2: Problem 86
Explain how to use the general form of a line's equation to find the line's slope and \(y\) -intercept.
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Chapter 2: Problem 86
Explain how to use the general form of a line's equation to find the line's slope and \(y\) -intercept.
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Describe one advantage of using \(f(x)\) rather than \(y\) in a function's equation. What is a piecewise function?
Almanacs, newspapers, magazines, and the Internet contain bar graphs and line graphs that describe how things are changing over time. For example, the graphs in Exercises \(79-82\) show how various phenomena are changing over time. Find a bar or line graph showing yearly changes that you find intriguing. Describe to the group what interests you about this data. The group should select their two favorite graphs. For each graph selected: a. Rewrite the data so that they are presented as a relation in the form of a set of ordered pairs. b. Determine whether the relation in part (a) is a function. Explain why the relation is a function, or why it is not.
Begin by graphing the square root function, \(f(x)=\sqrt{x} .\) Then use transformations of this graph to graph the given function. $$ g(x)=2 \sqrt{x+1} $$
Begin by graphing the standard cubic function, \(f(x)=x^{3} .\) Then use transformations of this graph to graph the given function. $$ g(x)=x^{3}-2 $$
Describe one advantage of using \(f(x)\) rather than \(y\) in a function's equation. For people filing a single return, federal income tax is a function of adjusted gross income because for each value of adjusted gross income there is a specific tax to be paid. On the other hand, the price of a house is not a function of the lot size on which the house sits because houses on same-sized lots can sell for many different prices. a. Describe an everyday situation between variables that is a function. b. Describe an everyday situation between variables that is not a function.
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