pre-algebra

Explain how to write a function rule from the table below. The write a function rule.
X 2,4,6
Y 1,0,-1

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asked by J
  1. when x increases by 2, y always decreases by 1
    so
    m = slope = -1/2
    y = -x/2 + b
    put in a point like (4,0)

    0 = -4/2 + b
    so b = 2
    so
    y = -x/2 + 2

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    posted by Damon

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