You didn't follow the forum's submission guidelines, so my question is: Are you familiar with the sinusoidal form?The question is: write an equation for [the] cosine wave that passes through the ordered pairs (0,5), (4,12), (8,5), (12,-2), (16,5).
Oops, I see didn't see the replies, before submitting my previous post.... It is easy to do it with the points graphed but I was wondering whether it is possible ... without having to draw ...