Question

Which of the following ordered pairs is a solution of x + y = 1?

(-2, 6)
(2, -6)
(-2, -6)

Answer 1

-2 + 6 = 4
2 + -6 = -4
-2 + -6 = -8

None of these ordered pairs work

Answer 2

None of them.

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:

`x+y=1\\-2+6=1\\4\\eq 1`

Then this pair isn't a solution of the expression.

(2,-6) this means x=2 and y=-6, then:

`x+y=1\\2-6=1\\-4\\eq 1`

This pair isn't a solution of x+y=1.

(-2,-6) this means x=-2 and y=-6, then:

`x+y=1\\-2-6=1\\-8\\eq 1`

This pair isn't a solution of x+y=1.

Then none of them is a solution of the expression x+y=1