Question 328893
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Use the slope formula:

*[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 you end up with a zero denominator, the slope does not exist.

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