Octopus

Frances B.
Frannie - I suggest using an octopus drawing like the one below to make your graph. You will have to put it on graph paper, or add the x- and y-axis to it, perhaps with Photoshop. Consider using the bottom of the octopus' head as the x-axis and the the height as the y-axis. Another idea is to research the typical head size of one species of octopus, getting the distance at the widest part and the height of the head from the bottom. Then you could use a spreadsheet and quadratic regression to find an equation. Good luck! Do you like to eat octopus?