This program shows the solution in 3D of the 2x3 system of equations:

Plane 1: $-x+y+z=2$

Plane 2: $-3x-2y+z=-4$

Which is the line in space defined by the parametric equations: $$x=\frac{3}{t}t,y=2-\frac{2}{5}t,z=t$$ You can rotate by swiping with your finger or dragging with the mouse. You can zoom by pinching the screen or using the mousewheel. Pressing 'm' will make the window toggle fullscreen mode.

Note that the x-axis is green, the y-axis is red and the z-axis is blue.