This aplet lets you dilate a parent function horizontally or vertically.[br][br]There are two functions shown: a parent function in [b]black[/b] and a dilation of it in [b][color=#00FF00][/color]green[color=#00FF00][/color][/b]. At first, you can only see the dilation because it is in front of the parent.[br][br]The dilation is either vertical (change the value of "a") or horizontal (change the value of "b") or both. Experiment and observe where the labeled points are moved to. [br][br]Notice that the equation for the dilation is (y/a) = f(x/b), which is equivalent to y = a*f((1/b)*x), which is the format many books use but seems pretty darn awkward and hard to wrap your head around. Stick with (y/a) = f(x/b) and you'll go far.

Michael Buescher[br]Hathaway Brown School[br]michael@mbuescher.com