If two planes are not parallel nor coincident, then they must intersect along a line.[br][br]In this example, the planes are [i]x[/i] + 2[i]y[/i] + 3[i]z[/i] = -4 and [i]x[/i] - [i]y[/i] - 3[i]z[/i] = 8. The dotted line represents the line of intersection of these two planes.
What are the normal vectors of each plane?
How many points of intersection are there between these planes?