Question 199369
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Use the point-slope form of the equation of a line:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ y - y_1 = m(x - x_1) ]


Where *[tex \Large m] is the given slope and *[tex \Large \left(x_1,y_1\right)] are the coordinates of the given point.


Note that you cannot derive "the" equation that represents a line because the set of equations that represent a given line has an infinite number of elements.  All you can do is provide "an" equation that represents the given line.


John
*[tex \LARGE e^{i\pi} + 1 = 0]
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