Answer:
(- 1, - 6 )
Explanation:
y = 3x - 3 → (1)
- 4x - 3y = 22 → (2)
substitute y = 3x - 3 into (2)
- 4x - 3(3x - 3) = 22 ← distribute parenthesis on left side and simplify
- 4x - 9x + 9 = 22
- 13x + 9 = 22 ( subtract 9 from both sides )
- 13x = 13 ( divide both sides by - 13 )
x = - 1
substitute x = - 1 into (1)
y = 3(- 1) - 3 = - 3 - 3 = - 6
solution is (- 1, - 6 )