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1 October, 22:53

In the xy-plane, the graph of the function f is a line. if f (2) = 7 and f (12) = 1, what is the value of f (7) ?

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  1. 1 October, 23:17
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    Given that the function is a line

    [f (7) - f (2) ] / [7 - 2] = [f (12) - f (2) ] / [12 - 2]

    [f (7) - 7] / 5 = [1 - 7] / 10

    [f (7) - 7] = 5 * [-6] / 10

    [f (7) - 7] = - 3

    f (7) = - 3 + 7 = 4
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