$x=\left[\begin{array}{cccccc}5& 4& 3& 2& 1& 0\end{array}\right]$

$y=$zeros$(3,4)+3$

$x$ and $y$ both contain the element $1$

$x$ and $y$ have the same number of rows

$x$ and $y$ contain the element $3$

$x$ and $y$ both contain the element $4$