Question

Give the vector equation of the line passing through P = (1,-2) and Q = (3,0).

Answer 1

the vector equation will have the form
r(t) = P + t ( Q- P)

Answer 2

r(t) = (1,-2) + t [ (3,0) - (1,-2) ]

Answer 3

r(t) = (1,-2) + t [ ( 3 - 1 , 0 - -2 ) ]
r(t) = (1,-2) + t ( 2, 2 )

Answer 4

Thanks a bunch!