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Math Help - transformations, dilations help

  1. #1
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    transformations, dilations help

    can anyone help me with #1 or #17-20 on this page?

    http://www.clayton.k12.mo.us/4037206...997/CH_1_6.pdf


    i know that #1 is a horizontal dilation but i dont know how to count how many its by or how to set up an equation for it
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  2. #2
    Member Last_Singularity's Avatar
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    Quote Originally Posted by kdeighan View Post
    can anyone help me with #1 or #17-20 on this page?

    http://www.clayton.k12.mo.us/4037206...997/CH_1_6.pdf


    i know that #1 is a horizontal dilation but i dont know how to count how many its by or how to set up an equation for it
    If it is horizontal, then it modifying the x by a constant scale before inputting it into the function.

    So for instance, if the original function were x^3 - 3x, then the new function is something like (x/2)^3 - 3(x/2), which is a scaling by a factor of 2.

    Something similar happens if you do it to a trigonometric function - just graph sin(x) versus sin(2x).
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