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Use slope to determine if lines AB and CD are parallel, perpendicular, or neither 6. A(-3, 8), B(3, 2), C(7,1), D(5,-1)m(AB) m(CD) Types of Lines

Respuesta :

[tex]\begin{gathered} \text{Slope for AB }\frac{2-8}{3-(-3)}=\frac{-6}{6}=-1=m_1 \\ \text{slople for CD }\frac{-1-1}{5-7}=\frac{-2}{-2}=1=m_2 \\ m_1\cdot m_2=-1\text{ } \\ \text{they are perpendicular} \end{gathered}[/tex]

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