Question

Show that the point (1,2,6), (7,-5,1), (1,1,4) and (-3,5,6) all lie on the same plane.

Answer 1

define the plane

create 2 vectors, cross them for a normal; then anchor it to any given point

then test all the points is my thought

Answer 2

you could also see if they form a basis that maps R^3 to R^2

Answer 3

class is starting to .... good luck

Answer 4

ah ok, thank you very much(^_^)