Question

Which two points are not on the graph 2x+3y-z-12=0

A.) (1, 1, 7)
B.) (6, 0, 0)
C.) (3, 3, 3

Answer 1

A.) (1, 1, 7)

Explanation:

Answer 2

Plug all three answers in and see which one does not equal 0
A: 2(1)+3(1)-7-12≠0
B: 2(6)+0-0-12=0
C: 2(3)+3(3)-3-12=0

So A. I don't know why it says two (?) points?