origin is where you begin or where the x and y axis intersect
(x,y)
x tells how many units to go to the right (if negative, go left)
y tells how many units to go up (if negative, go down)
so
(x,y)
(7,-2)
go 7 units right and -2 units up (7 units right and 2 units down)
attachment inlcuded below
