Algebra 2

x f(x) g(x)
2 5 0
3 7 1
4 9 2
5 11 3

What is the equation of g(x) ?
What is g(g(4)) ?
Name a point on the graph of g(x)

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  1. The table didn't turn out very good so here it is another way:
    x: 2, 3, 4, 5
    f(x): 5, 7, 9, 11
    g(x): 0, 1, 2, 3

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  2. g(x) = x-2
    g(4) = 2
    g(g(4)) = 0

    They have already provided you with four points on the g(x) curve. Ignore the data on f(x).

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  3. Notice f(x) and g(x) increase by two, and one, for each increase in x.

    f(x)=2x+1
    g(x)=x-2

    Will that do it?

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    bobpursley

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