A

B

C

C'

A = (2, 2)
B = (4, 1)
u = Vector(A, B)
C = (1, 4)
D = (3, 3)
v = Vector(C, D)
a = Line(C, D)
t = 0 (slider from -5 to 5, step 0.05)
E: (1, 4) + (t * (2, -1))