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27 May, 10:30

What is the equation of the line perpendicular to negative x plus y equals seven and passing through (-1 - 1) ?

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  1. 27 May, 13:51
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    Hello:

    the equation is : y = ax+b

    the slope is a : a * (1) = - 1 ... (perpendicular to a line : - x+y = 7 or y = x+7 with a slope of 1)

    a = - 1 y=-x+b

    the line that passes through (-1, - 1) : - 1 = - (-1) + b

    b = - 2

    the equation is : y = - x-2
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