Answer:
D (1, 7)
Explanation:
From equation 2
y = (-4 + y)/3
Plug this value into the first equation which will give an equation involving only y. Solve for y which should give y = 7
Plug this value of y = 7 into 3x -y = -4
=> 3x - 7 = -4
=> 3x = 3
x = 1
So solution is x =1, y = 7 which can be represented as (1, 7)