I think most would classify it as either "elementary algebra" or "pre-algebra". Technically single-variable equations do fit within the definition of algebra, but I guess I agree with Dottie it is misleading to say that a kid doing such stuff is "doing algebra", unless one explains what one means. Since you and the teacher both knew the context, I think you were technically in the right, but the teacher was also in the right going by the normal idea of what algebra entails.

Striving to increase my rate of flow, and fight forum gloopiness. sick