Question

Find the linear equation of the plane P3 containing that point (3; 1;1),
and orthogonal to the line described by the vector equation L = (5;6;1)+
t(2; a; 5 a), where a 2 R.

Answer 1

Sorry that last part: "where a 2 R" is meant to be "Where a E R." Sorry can't get the symbol E.

Thanks for any help.