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    WHITEO's Avatar
    WHITEO Posts: 3, Reputation: 1
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    #1

    Dec 29, 2006, 06:50 AM
    Vertical distance between two functions
    Given the functions f(x)=.25x²+2x+11 and g(x)=-.75x-4. What is the vertical distance between the two functions when x=4?
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #2

    Dec 29, 2006, 06:54 AM
    Please correct me if I'm being silly.

    But I think you're asking for the difference in y value at x=4

    So you can stick x=4 into your equations and then compare the results

    So in your case the value you're looking for is



    Which is just the first equation minus the second, and substituting 4 for x

    Let me know if you need further clarification, or if i have interpreted wrongly.
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