Math - Functions

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I've been working on this function for quite awhile and just can't seem to get it.

Inputs x 5, 6, 7, ?
Outputs y 50, 72, 98, ?

I need the equation too.

Please help!

  • Math - Functions -

    5 * 10 = 50
    6 * 12 = 72
    7 * 14 = 98
    8 * 16 = 128

  • Math - Functions -

    or

    5 ---> 50 = 2(25) = 2(5^2)
    6 ---> 72 = 2(36) = 2(6^2)
    7 ---> 98 = 2(49) = 2(7^2)

    equation:
    y = 2x^2

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