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13 March, 12:17

Line passing through (4,-1) and (3,-2)

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  1. 13 March, 13:20
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    Answer: y = x - 5

    Solution:

    Find the slope in order to find the line of equation

    m = y2-y1/x2-x1

    Take both the coordinates and name it A (4,-1) B (3,-2) for convenience

    m = - 2 - (-1) / 3-4

    m = - 2 + 1 / - 1

    m = - 1 / - 1 >>> m = 1

    Now find the y intercept using the equation below

    y=mx + b

    where

    y = y coordinate

    m = slope

    x = x coordinate

    b = y intercept

    SO

    Note: use any of the coordinate the answer would be the same in either case

    I will be using the coordinate (4,-1)

    y=mx+b

    -1 = (4) (1) + b

    -1 - 4 = b

    -5 = b

    y = x - 5
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