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Math Help - Graphing a rational function.

  1. #1
    Junior Member
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    Graphing a rational function.

    I'm trying to graph

    4x^2+12x+9 / x^2-6x-5

    I factored out the two

    (2x+3)^2 / (x-1)(x-5)

    The points I have are

    Zeroes

    -3/2 with the multiplicity of 2 ( is this a zero for both -3/2 and 3/2 or just -3/2?)

    VA
    5 m1
    1 m1

    HA

    4

    Y int.
    9/5

    When I plot in the data for these points and check with what the calculator got i get mixed up. Am I missing data?
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  2. #2
    MHF Contributor MarkFL's Avatar
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    St. Augustine, FL.
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    Re: Graphing a rational function.

    You have factored the denominator incorrectly. Use the quadratic formula to find the VAs.

    The function has only 1 zero, of multiplicity 2.
    Last edited by MarkFL; November 7th 2012 at 07:04 PM.
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