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What is the equation of the line perpendicular to –x + y = 7 and passing through (-1, -1)? -x + y = 2 -x – y = 2 x – y = 2 -x – y = 0 x + y = 0
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Jun 14, 2019
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What is the equation of the line perpendicular to –x + y = 7 and passing through (-1, -1)?
-x + y = 2
-x – y = 2
x – y = 2
-x – y = 0
x + y = 0
Mathematics
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Tovah
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- x + y = 7
y = x + 7
slope = 1
perpendicular slope = -1
at point (-1, -1),
y = mx + c
-1 = -1 (-1) + c
-1 = 1 + c
c = -1 -1
c = - 2
equation:
y = -x -2
y + x = -2 or - x - y = 2
Martin Andersen
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Jun 18, 2019
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Martin Andersen
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