Answer:
Because i have no more information i assume you would like it to be solved.
x < -1 or -1/3 < x < 1
So the question ask to find and calculate the vector parametric equation r(t) for the line through the points P=(1,0,-2) and Q(1,5,1) for each given condition. And the possible vector parametric equation is <1,2,-2>+t/4<1,5,3>. I hope you are satisfied with my answer and feel free to ask for more
816/100
404/25
hope this helps
