Answer:
None of them.
Step-by-step explanation:
We have the expression x+y=1 and to know which ordered pair is a solution of x+y=1 we have to replace them in the expression.
(-2,6) this means x=-2 and y=6, then:
[tex]x+y=1\\-2+6=1\\4\neq 1[/tex]
Then this pair isn't a solution of the expression.
(2,-6) this means x=2 and y=-6, then:
[tex]x+y=1\\2-6=1\\-4\neq 1[/tex]
This pair isn't a solution of x+y=1.
(-2,-6) this means x=-2 and y=-6, then:
[tex]x+y=1\\-2-6=1\\-8\neq 1[/tex]
This pair isn't a solution of x+y=1.
Then none of them is a solution of the expression x+y=1
