Math 8 - HELP!

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Write the equation of the line that passes through the points (1,6) and (-1,-2)

please help!!!!

  • Math 8 - HELP! -

    slope = (-2-6)/(-1-1) = -8/-2 = 4

    then
    y-6 = 4(x-1) , using the point (1,6)
    y-6 = 4x - 4
    y = 4x + 2

    test using the point which was not used, (-1,-2)

    LS = y = -2
    RS = 4x + 2 = 4(-1) + 2 = -2 = LS

    all looks good

    other forms, which can be found by just re-arranging, are

    4x - y + 2 = 0
    or
    4x - y = -2

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