Well, you have to ask the question first.
(x,y) if proportional coordinates
(0,0)
(5,9)
(10,18)
linear goes on forever so endless coordinates
Break the number apart into hundreds, tens, ones, etc. and add the quantities together. Here is an example:
<em>To write 256 in expanded form, break it apart. There is 200, 50, and 6 in 250. Now, add them together. 200 + 50 + 6 = 256</em>
