The line x−23=y−34=z−40 is parallel to
xy-plane
yz-plane
zx-plane
None of these
The given line is perpendicular to z-axis. Hence parallel to xy-plane.
Find the value of A+B+C if : A=(7xy+5yz−3zx) B=(4yz+9zx−4y) C=(−3xz+5x−2xy)
When 7xy+5yz−3zx, 4yz+9zx−4y and −3xz+5x−2xy are added, we get 5xy+9yz+3zx+5x−4y.