Question 152881
Let x=age and y=BMI


If we plot the points, we get 


<img src="http://i150.photobucket.com/albums/s91/jim_thompson5910/points-1.jpg" alt="Photobucket - Video and Image Hosting">



Notice that the data is periodically rising and falling. So a trigonometric function like {{{sin(x)}}} or {{{cos(x)}}} would fit this data. 



Here is my attempt to fit a {{{cos(x)}}} function to the data. It's not perfect, but it gets pretty close


<img src="http://i150.photobucket.com/albums/s91/jim_thompson5910/pointswithgraph.jpg" alt="Photobucket - Video and Image Hosting">