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Perpendicular Lines

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Name

Perpendicular lines.
Graph Formulas
\text{Given two lines }L_{1}\text { and }L_{2}\,


m_{1}=\text{slope of }L_{1}\,


m_{2}=\text{slope of }L_{2}\,


\text {If }L_{1}\;\bot \; L_{2}\,

\text{then}\,


m_{2}=-\frac{1}{m_{1}}


m_{1}m_{2}=-1\,



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