Question:
Find the equation of the plane through the points (2,2,1), (1,2,3) and parallel to the x-axis.
What I found to be hard to understand:
If the required plane is parallel to x-axis, I understand the direction ratios of it is in the form of <a,0,0> where a is a real number.
How do we find this a?
Thank you!
a quick google search turned up this handy article
math.stackexchange.com/questions/1941072/find-an-equation-for-the-plane-parallel-to-the-x-axis-and-passing-through-two-gi