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15 February, 10:09

Which function is represented by the graph below? graph begins in the second quadrant near the x-axis and increases slowly while crossing the ordered pair 3, 1. Then the graph begins to increase quickly throughout the graph

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  1. 15 February, 12:10
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    This seems an exponential function.

    Once you state that the function is exponential you can write is this form:

    f (x) = A * b^x.

    Then you need the y-intercept (i. e. x = 0) to find A

    f (0) = A * b^0 = A

    Once you have A, you can use the ordered pair (3,1) to find b

    f (1) = A*b^2 = A*b = 3 = > b = 3/A.

    With that procedure you can find the function that represents the given graph.

    Suppse the y-intercep is 0.1

    Then f (0) = A = 0.1

    And b = 3 / A = 3/0.1 = 30

    And the function is f (x) = 0.1 * 30^x
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