Hello,(adsbygoogle = window.adsbygoogle || []).push({});

I am trying to find the line of intersection between these two planes:

[tex]P_1[/tex] = x + 2y -9z = 7

[tex]P_2[/tex] = 2x - 3y + 17z = 0

I found the direction vector needed for the line of intersection between these two points by taking the cross product of the [tex]P_1[/tex] normal vector and the [tex]P_2[/tex] normal vector which gave me [tex]\vec{a}[/tex] = <7,-35,-7>

Now all I need is a point somewhere along the direction of that vector. This is where I am stuck. Any help on finding this point would be awesome. Thanks!!

~Peter

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Find the line of intersection between 2 Planes

**Physics Forums | Science Articles, Homework Help, Discussion**