Find a vector parametric equation for the line through the points P= (0,4,-3) and Q=(-5,4,1)

For each of the given conditions on the parameter t:
if r(0)= (0,4,-3) and r(2)=(-5,4,1)
if the points p and q correspond to the parameter values t=0 and t=-4

Any help would be greatly appreciated.

vector PQ = <-5, 0, 4>

= <-5, 0, 4>(t/2) + <0, 4, -3> = <-5/2, 0, 2>t + <0, 4, -3>

= <-5, 0, 4>(t./4) + <0, 4, -3> = <-5/4, 0, 1>t + <0, 4, -3>