# Math Help - equation of cartesian

1. ## equation of cartesian

Wad does this mean? And how to solve it? thanks in advance.

find the equation of Cartesian for the straight line L intersects the surface
P1:x+y+z=2 P2: -x+2y+z=4

2. Originally Posted by ailing418
Wad does this mean? And how to solve it? thanks in advance.

find the equation of Cartesian for the straight line L intersects the surface
P1:x+y+z=2 P2: -x+2y+z=4
Solve

x+y+z=2 .... (1)

-x+2y+z=4 .... (2)

simultaneously for x, y and z (you will get a parameter in the solution). The solution gives the parametric equations of the required line.