Question 201224
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In general you would use the two-point form of the equation of a line:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ y - y_1 = \left(\frac{y_1 - y_2}{x_1 - x_2}\right)(x - x_1) ]


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


However, notice that the *[tex \Large y]-coordinates of both of your given points are equal to -9.  That means that the *[tex \Large y]-coordinate of every point on the line is equal to -9.  The answer be staring you in the face.


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