The ordered pair (1, - 5) is a solution for the system x + 2y = - 9 and x - y = 6.

true

false

In an ordered pair, x is the first number and y is the second number. So this is telling you x=1 and y=-5. You can take this information and plug it into the formulas.

x + 2y = - 9

1 + 2 (-5) = - 9

1 + - 10 = - 9? True

x - y = 6

1 - - 5 = 6? *

1 + 5 = 6? True.

(*Subtracting a negative makes it a positive.)