1. The problem statement, all variables and given/known data Plane passes through points (a,b,c) and (e,f,g) parallel to x-axis Find the equation of plane Ax+By+Cz+D=0 General question for this--(a,b,c) and (e,f,g) can be any points in space 2. Relevant equations Below 3. The attempt at a solution First, I find the vector <e-a,f-b,g-c> Then, I know parallel to x-axis implies that direction vector is <1,0,0> Next, I do cross product between first vector and second vector. I would then get <i,j,k>. So, how do i use this information to get equation of the plane? Do i use <i,j,k> from cross product as A,B,C, in the equation of the plane? How do I find D? Is this attempt even correct? Thanks for any info. Calc III is awesome!