Posted by **spencer** on Monday, March 18, 2013 at 1:21am.

sine curve in the form of y = a sin(pi/2x) that passes through the point (2.5,-9.546)

- precalc -
**Steve**, Monday, March 18, 2013 at 4:35am
pi/2 * 5/2 = 5/4 pi

so, we want a sin(5/4 pi) = -9.546

Since sin 5/4 pi = -1/√2, we want

a (-1/√2) = -9.546

a = 13.5

So, y = 13.5 sin(pi/2 x)

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