Answer
See explanation
Work Step by Step
$z=5$ represents the set $\{(x,y,z) | z=5\}$, a plane parallel to teh $xy$ plane.
$y=3$ represents the set $\{(x,y,z) | y=3\}$, a plane paralel to the $xz$ plane
$\{(x,3,5)|x\in \mathbb{R}\}$ represents a line parallel to the $x$-axis and passing through the point $(0,3,5)$, the intersection of the above planes.
