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Grade 11 algebra question

  1. Sep 15, 2009 #1
    Having trouble with this question. Usually i'd have to see examples first and rep it out but time ran out of class and i guess we couldn't see them. He gaves us tons of notes though but i'm not really sure if i'm doing it right.

    1. The problem statement, all variables and given/known data
    for g(t) = 3t-2, determine each of the following.

    (the -1 is an inverse..)
    a. g -1 (-2)
    b. g -1(a+1) - g -1(a)

    2. Relevant equations



    3. The attempt at a solution

    Here's what i did with the g -1(-2)

    g(t)=3t-2
    t=3g(t)-2
    (t-2)/3=g(t)
    (-2-2)/3 = -4/3

    I have no idea how to do the next one though. Well yea i do but it's probably completely wrong.
     
  2. jcsd
  3. Sep 15, 2009 #2

    Office_Shredder

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    For the next one, you're taking the difference of two values such that, when you apply g to them, one gives you a value 1 larger than the other. How much does x have to increase by for g(x) to increase by 1?
     
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