Which of the following equations is NOT an example of inverse variation? 1. f(x) = kx 11. f(x) = 2k/x III. f(x) =-kx

Question

Which of the following equations is NOT an example of inverse
variation?
1. f(x) = kx
11. f(x) = 2k/x
III. f(x) =-kx/z

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Orla Orla 22 hours 2021-07-23T00:16:47+00:00 1 Answers 0 views 0

Answers ( )

    0
    2021-07-23T00:18:17+00:00

    Answer:

    i and iii are not examples of inverse variation.

    Step-by-step explanation:

    Inverse variation between two variables, y and x, is written as:

    y = k/x

    This means that, as the absolute value of x increases, the absolute value of y decreases.

    So we need to have the variable in the denominator.

    Let’s analyze the given options:

    i) f(x) = k*x

    Here, x is not in the denominator, this is a direct variation, so this is not an example of inverse variation.

    ii) f(x) = 2k/x

    Here we can see that the variable x is in the denominator, thus, this is an inverse variation.

    iii) f(x) = -k*x/z

    We can see that we have z in the denominator, but you can see that the variable is x, and x is in the numerator, thus, this is not an example of inverse variation.

    We can conclude that:

    f(x) = kx

    and

    f(x) =-kx/z

    Are not examples of inverse variation.

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