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Math Help - Dilation

  1. #1
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    Dilation

    Given a dilation with the origin O (0, 0), by observation determine the scale factor "K."
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  2. #2
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    Hello winsome
    Quote Originally Posted by winsome View Post
    Given a dilation with the origin O (0, 0), by observation determine the scale factor "K."
    Take a point A on the original shape. Join it to the origin O. Take the image A' of this point on the new shape; join to O. The scale factor k of the dilation is given by
    k = \dfrac{OA'}{OA}
    Grandad
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  3. #3
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    Given a dilation with the origin O (0, 0), by observation determine the scale factor "K."
    DO, K = (5, 0) (10, 0)
    The dilation an expansion.
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  4. #4
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    Try visualize it, you got two lines on the x-axis. One goes from 0 to 5, we call that l, and the other goes from 0 to 10 which we call m. How much 'longer' is m compared to l?
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