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Homework Help: Algebra II help

  1. Sep 12, 2004 #1
    im perplexed by this question...we were never teached domain and range... so please help in an easy way with this question : "Suppose the function f(x) = 4x + 3 is defined for x > -2. "

    A. Find f(-1) .... i got -1

    B. Find the domain and range of F ........ here I am lost PLEASE help
  2. jcsd
  3. Sep 12, 2004 #2
    Domain is the the set value x for f(x) to be defined.in this case, it is given as [tex]x \geq\ -2[/tex].
    Range is the set of value of f(x) for the domain. f(-2)=-5. so, the range is [tex] f(x)\geq \ -5[/tex]

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