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Math

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what is the math rule if u put in 1 and get 15, put in 2 and get 13, put in 3 and get 11, put in 4 and get 9, and put in 5 and get 7

  • Math - ,

    did you notice that the output value decreases by 2 each time??

    so start with
    y = -2x + b
    and use one of the given values, e.g. (1,15)
    15 = -2(1) + b
    17 = b

    rule: y = -2x + 17

    check it with the other values, it works

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