Question 460557
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Use the slope formula on each pair of points:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ m\ =\ \frac{y_1\ -\ y_2}{x_1\ -\ x_2} ]


where *[tex \Large \left(x_1,y_1\right)] and *[tex \Large \left(x_2,y_2\right)] are the coordinates of the given points.


If the slopes are equal, then the lines are parallel.


If the slopes are negative reciprocals, then the lines are perpendicular.


If the slopes are neither equal nor negative reciprocals, then the lines are neither parallel nor perpendicular.


John
*[tex \LARGE e^{i\pi} + 1 = 0]
My calculator said it, I believe it, that settles it
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