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7 December, 13:23

Which rule represents a dilation with respect to the origin? D1.8 (5, 10) = (9, 14) D1.8 (5, 10) = (9, 18) D1.8 (5, 10) = (13, 18) D1.8 (5, 10) = (13, 26)

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  1. 7 December, 17:21
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    D1.8 (5, 10) = (9, 18)

    Step-by-step explanation:

    It is required to find which rule represents a dilation with respect to the origin.

    So, the corresponding value of x and and y should be in proportion and should be equal the dilation ratio.

    Check the options to find the true rules:

    1) D1.8 (5, 10) = (9, 14)

    9/5 = 1.8, 14/10 = 1.4 ⇒ 9/5 ≠ 14/1 ⇒ Wrong rule

    2) D1.8 (5, 10) = (9, 18)

    9/5 = 1.8, 18/10 = 1.8 ⇒ 9/5 = 18/10 = 1.8 ⇒ True rule because of D1.8

    3) D1.8 (5, 10) = (13, 18)

    13/5 = 2.6, 18/10 = 1.8 ⇒ 13/5 = 18/10 ⇒ Wrong rule

    4) D1.8 (5, 10) = (13, 26)

    13/5 = 2.6, 26/10 = 2.6 ⇒ (13/5 = 26/10) but ≠ 1.8 ⇒ Wrong rule

    So, The rule which represents a dilation with respect to the origin is:

    D1.8 (5, 10) = (9, 18)
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