Math

I need some help on this function rule question please.
8.) Find the function rule.
x: -2 -1 0 1 2
y: 9 4 -1 -6 -11

I'm having a really hard time figuring this out. Thanks to anyone that helps:)

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  1. Note that y decreases by 5 when x increases by 1. So, start with

    y = -5x

    Now note that y(0) = -1, so you need to adjust the function a bit:

    y = -5x-1

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  2. Anyone know how to help?

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  3. The function rules is:
    y = -5x - 1

    9 = -5(-2) - 1
    4 = -5(-1) - 1
    -1 = -5(0) - 1
    -6 = -5(1) - 1
    -11 = -5(2) - 1

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  4. Is this the right answer

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