Math Pattern Help

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Please help me to find out the missing y Numbers. I cannot figure out the pattern.

x Y
1 9
2 8
3 7
4
8
10
12 -2
15
20

  • Math Pattern Help -

    The x column increases by 1 and the Y column decreases by 1.

    4 - 6
    5 - 5

    I'm sure you can take it from there.

  • Math Pattern Help -

    as the x increases by 1, the y appears to decrease by 1

    y = -x + 10

    for x=4 , y = -4+10 = 6 , yup, that fits the pattern
    for x =8, y = -8+10 = 2

    etc.

    (notice x=12, y=-2 fits my pattern)

  • Math Pattern Help -

    Based on what you said this is what I came up with. Did I do the rest of the pattern correctly?
    Thank you so much for your help.

    X y
    1 9
    2 8
    3 7
    4 6
    8 2
    10 0
    12 -2
    15 -5
    20 -10

  • Math Pattern Help -

    12 7

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