Respuesta :

altavistard

Answer:

(-6,9)

Step-by-step explanation:

That y = 9 is given.  Thus, substitute 9 for y in x + y = 3, obtaining x + 9 = 3.

Subtracting 9 from both sides, we get x = -6.  Then the solution is (-6,9).


triumphthurman10

Answer:

(-6,9) is the answer