1.2 Algebra 2 Review -- Functions

1.2 Algebra 2 Review -- Functions - 1.2 Algebra 2 Review...

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Objective : Students will classify functions and their properties and use them to solve problems. Function Definition In Algebra 2 we used the phrase " is a function of " to speak of functions in a general sense. In Algebra 1, we defined a function as a rule that assigned one and only one (a unique) output value for each input value. Recall from Algebras 1 & 2 that a relation is set of ordered pairs and that NOT all relations are functions. When determining whether or not a relation is a function, we can take a look at either the relation's ordered pairs or the relation's graph. Which of the three relations below is also a function? Vertical Line Test If any vertical line intersects a graph ______________________________, then that graph does NOT represent a function. 1.2 Algebra 2 Review -- Functions Chapter 1 Page 1
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For many functions, the domain consists of all real numbers, ________. Typically we begin with this assumption and then determine if there any values for that cannot be used. With what you know from Algebra 2, the domain of a function may be restricted for two reasons.
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