Hi guys,

I've got this exercise where I'm required to describe the equation of the plane determined by the fact that the following

three points lie in it:

So we find two vectors that lie in the plane

and

To find a normal vector we need to take the cross product

The equation can now be rewritten to the form

I'm not sure how to reorganize that equation to evaluate the d mentioned above. Any help /push in the right direction would be great!

So we distribute out the left hand side.

If any mistakes can be pointed out and any help towards the completion of this exercise would be greatly appreciated.