Question 657659
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Calculate the slope of each of the lines represented by your two equations.  When an equation is in standard form, namely *[tex \LARGE Ax\ +\ By\ =\ C], then the slope is equal to the opposite of the coefficient on *[tex \LARGE x] divided by the coefficient on *[tex \LARGE y], that is: *[tex \LARGE \frac{-A}{B}]


If the slopes of two lines are equal, then the lines are parallel.  If the slopes are negative reciprocals, i.e. *[tex \LARGE m_1\ =\ \frac{1}{m_2}], then the lines are perpendicular.  Otherwise, neither.


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