Answer:
(- 1, 3 )
Step-by-step explanation:
y = - x + 2 → (1)
3x - y = - 6 → (2)
Substitute y = - x + 2 into (2)
3x - (- x + 2) = - 6 ← distribute parenthesis and simplify left side
3x + x - 2 = - 6
4x - 2 = - 6 ( add 2 to both sides )
4x = - 4 ( divide both sides by 4 )
x = - 1
Substitute x = - 1 into (1)
y = - (- 1) + 2 = 1 + 2 = 3
solution is (- 1, 3 )
