algebra

Write the equation for the following relation. Include all of your work in your final answer. Submit your solution.

P = {(x, y): (1, 0), (2, 4), (3, 8), (4, 12),

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  1. y increases by 4 when x increases by 1. So, look for something like

    y = 4x+b

    Now, when x=1, y=0, so we end up with

    y = 4x-4

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    posted by Steve
  2. line of form y = m x + b

    m = (Y2/Y1)(X2-X1)
    = (4-0)/(2-1)
    = 4 check with other points (like (12-0)/(4-1) )

    y = 4 x + b
    put a point in to find b
    0 = 4(1) + b
    b = -4
    so
    y = 4 x - 4

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    posted by Damon

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