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16 June, 09:48

Given the range of the function find the corresponding domain. f (x) = 7x-1 Range {-2,0,4,8}

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  1. 16 June, 13:08
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    f (x) = 7x - 1

    -2 = 7x - 1

    -2 + 1 = 7x

    -1 = 7x

    x = - 1/7

    0 = 7x - 1

    1 = 7x

    x = 1/7

    4 = 7x - 1

    4 + 1 = 7x

    5 = 7x

    x = 5/7

    8 = 7x - 1

    8 + 1 = 7x

    9 = 7x

    x = 9/7

    So the domain is

    Domain = {-1/7, 1/7, 5/7, 9/7}
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