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Decide Whether the Pair of Lines Is Parallel, Perpendicular, or Neither

Question 153

Multiple Choice

Decide whether the pair of lines is parallel, perpendicular, or neither.
- 3x−6y=718x+9y=−7\begin{array} { l } 3 \mathrm { x } - 6 \mathrm { y } = 7 \\18 \mathrm { x } + 9 \mathrm { y } = - 7\end{array}


A) parallel
B) perpendicular
C) neither

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