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An equation of the line in slope intercept form that passes through the point (-9, -1) and is perpendicular to the line y = 3x + 17?
Please help...

  • math -

    the slope you want is -1/3

    Now you have a point and a slope:

    (y- (-1))/(x - (-9)) = -1/3

    or

    (y+1)/(x+9) = -1/3

    y+1 = -1/3 x - 3

    y = -1/3 x - 4
    or
    x + 3y + 12 = 0

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