Question 239978
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Since you have two ordered pairs, you need to 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 your two given points, namely *[tex \Large \left(23.5,325\right)] and *[tex \Large \left(30,0\right)]


Make the indicated substitutions and then do the arithmetic.  In order to express this as a function, you need to put your result into slope-intercept form, namely *[tex \Large y\ =\ mx\ +\ b] by solving for *[tex \Large y]


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