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CHAPTER_3_6 - 3.6 Functions Relations Domain Range A set of...

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§ 3.6 Functions
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Martin-Gay, Beginning and Intermediate Algebra, 4ed 2 Relations, Domain, & Range A set of ordered pairs is called a relation . The set of all x -coordinates is called the domain of a relation. The set of all y -coordinates is called the range of a relation.
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Martin-Gay, Beginning and Intermediate Algebra, 4ed 3 Find the domain and range of the relation {(4,9), (–4,9), (2,3), (10, –5)}. The domain is the set of all x -values: {4, –4, 2, 10}. The range is the set of all y -values: {9, 3, –5}. Example: Domain and Range
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Martin-Gay, Beginning and Intermediate Algebra, 4ed 4 Find the domain and range of the graphed function. Use interval notation . x y Domain: [ 3, 4] Domain Range: [ 4, 2] Range Example: Domain and Range
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Martin-Gay, Beginning and Intermediate Algebra, 4ed 5 Find the domain and range of the graphed function. Use interval notation . x y Domain: (– , ) Domain Range: [– 2, ) Range Example: Domain and Range
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Martin-Gay, Beginning and Intermediate Algebra, 4ed 6 A function is a set of order pairs that assigns to each x
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