I was solving some vectors exercises but I came across with some doubts about them. I don't know how to do these exercises, so I would appreciate some help. Thanks.
1) Find a parametric and a vectorial equation for a straight line parallel to the $Y$ axis and knowing that it intersects the straight line defined by $2y+3=0$
2) Let the straight line be $L': (x;y)=2+3t, -1+kt$, determine, if possible, $k$, which belongs to the real numbers, so that $L'$ is A) perpendicular to the $X$ axis B) perpendicular to the vector $(-7;1)$