The problem statement, all variables and given/known data Find the plane that contains the line x=3+2T, Y=t, Z=8-t and is parallel to the plane 2x + 4y +8z =17. The attempt at a solution It seemed to me that since the plane is parallel to the plane 2x+4y+8z=17, it must be of the form 2x+4y+8z+D=0 so that it would be parallel. (Is that true?) Anyways, I then converted the equation of the line out of parametric into (x-3)/2 = Y = -(Z-8). (I know that part's right.) But now I'm not sure what to do. Ideas?