$\vec{u}$

$\vec{p}$

$\vec{x}$

g: \orange{\vec{x}} = \blue{\vec{p}} + t \cdot \violet{\vec{u}}

$t \cdot \vec{u}$

t = 4 (slider from -10 to 10, step 0.1)
O: (0, 0, 0)
P: g(0)
Q: g(1)
u = Vector(P, Q)
v = Vector(O, P)
X: g(t)
w = Vector(O, X)
a = Vector(P, X)