Answer:
(- 2, 4 )
Explanation:
given
y = - x + 2 and y = 4
since we are given the value of y, then substitute y = 4 into the other equation, that is
4 = - x + 2 ( subtract 2 from both sides )
4 - 2 = - x + 2 - 2 ( simplify )
2 = - x ( multiply both sides by - 1 )
2 × - 1 = - x × - 1 , that is
- 2 = x
solution is (- 2, 4 )