A: {{4, -1}, {2, 1}}
v: (1, 1)
s = 1 (slider from -5 to 5, step 0.05)
L = Line((0, 0), v)
v_2: (s * v)
w: (1, 2)
v_3: (A * v_2)
K = Line((0, 0), w)
w_2: (s * w)
w_3: (A * w_2)