Chapter 12: Vectors and the Geometry of Space - Section 12.1 - Three-Dimensional Coordinate Systems - Exercises 12.1 - Page 696: 27

$x=1,y=-3,z=-1$

Let us consider a point $(a,b,c)$ on the plane. When the plane passing through the point $(a,b,c)$ and perpendicular to the $x-axis, y-axis$, and $z-axis$, this means that we have $x=a,y=b$ and $z=c$ Here, we get $x=1,y=-3,z=-1$