Finding a line of intersection.

[max2794]

On a 3D graph I have entered 3 equations with 3 unknowns. These 3 plains intersect and I would like to find the equations of the line of intersection. How do I do this?
Many Thanks  ???

[Simon]

Dear max2794,

In most case three planes will intersect at a point not a line. If you have three planes that do intersect at a line then you should select two planes, right-click and choose intersection. Then choose another two planes, right-click and choose intersection. You should find that these two lines are the same.

Best regards,

Simon