Question

Describe the sets of points in space whose coordinates satisfy the given inequalities or combinations of equation and inequalities.
$x=y$, no restriction on $z$

Answer 1

Let point be $(x,y,z)$

Since $x=y$

Let $x=a$

& $z=b$

So, point will be $(a,a,b)$

$\forall a,bϵR$