Posted by Roberto & Cecilia on .
write two different vector equations for the plane that contains the points A(6,1,4), B(3,7,9), C(5,0,3)

calculus exam review 
Reiny,
find two direction vectors
vector CA = (1,1,1)
vector BA = (9,6,5)
so one such equation is
r = (6,1,4) + s(1,1,1) + t(9,6,5)
you write a second one,
you could simply use one of the other 2 given points, or find the third direction vector.