г 4. Find the vector equation of the line that a) passes through the point A(3,-2,0) and is parallel to the y-axis. b) passes through the point P(-1,0,4) and is perpendicular to the yz-plane. c) passes through the point A(3,0,0) and is perpendicular to the x-axis. d) passes through the origin and is parallel to the yz-plane. S