So I've been out of the loop of math for some 4 years, and now I'm back in college doing math. Everyone loves math!
So lets discuss something I'm wondering about.
y(2)-y(1)
________
x(2)-x(1)
Can this equation be reversed ?
Can we do
y(1)-y(2)
________
x(1)-x(2)
I'm under the assumption that you can, based only on the fact that in the previous week or two I swear I read something that told me you could, SO LONG as you remained uniform (ie didn't do y(2)-y(1) over x(1)-x(2)
But my buddy thinks you can't swap it.
Can I get some clarification?
(Yes I am aware that y=mx+b is the actual slope intercept form, but I'm discussing how to get it into that form)