Naomi solves a system of equations using substitution. The system has infinitely many solutions. Which of the following could be the last step in Naomi's solution?
A. x = 0
B. 3 = –3
C. 2 = 2
D. 5 = y

Question

Naomi solves a system of equations using substitution. The system has infinitely many solutions. Which of the following could be the last step in Naomi's solution?
	A.	x = 0
	B.	3 = –3
	C.	2 = 2
	D.	5 = y

minustempo · Answer

If x = 0, then there's 1 solution. if 3 = -3 then there are no solutions. If y = 5 then there's also  solution.
A system has infinitely solutions if you end up with something lik x = x
so 2 = 2 means infinite solutions