Question 583716
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Divide the coefficient on *[tex \Large x] by the coefficient on *[tex \Large y].  Since both the *[tex \Large x] and *[tex \Large y] variables are on the same side of the equals sign, take the negative of the quotient to get the slope.  Do this process for each of your equations.


If the slopes are equal, the lines are parallel.


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


Otherwise, 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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