 \vec{ i } 

 \vec{ j } 

O = Intersect(xAxis, yAxis)
A_3 = Point(xAxis)
B_1 = Point(yAxis)
u_1 = Vector(O, A_3)
v = Vector(O, B_1)
e = Line(O, A_3)
f = Line(O, B_1)
A = (4, 2)
B = Point(e)
C = Point(f)
D = (-2, 3)
E = Point(f)
F = Point(e)