Question 352780
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All straight lines in *[tex \Large \mathbb{R}^2] (with one notable exception as to classification) can be represented by an equation in slope-intercept form, namely:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ y\ =\ mx\ +\ b]


Horizontal lines have a zero slope.  So if you ever see *[tex \Large y\ =\ 0x\ +\ b], or as is much more likely, *[tex \Large y\ =\ b], where *[tex \Large b] is any real number, then you have a horizontal line.


The exception noted above refers to vertical lines where the slope is undefined.  In the case of vertical lines, you would have an equation consisting of *[tex \Large x] set equal to some constant value.


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