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Write an equation of the line that passes through (3,-4) and is perpendicular to y=1/2x+7.

1 Answer

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The slope of the line perpendicular to the above will be the inverse and opposite sign of the above slope. So, slope (m) = 2
y = 2x + b
-4,7

Substitute:
7 = (2)(-4) + b
7 = -8 + b
b = 15
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