Answer:
(0, -4)
Step-by-step explanation:
We can just substitute the y's like this: 2x - 4 = -2x - 4
Move like terms to one side by adding 2x to both sides
2x - 4 = -2x - 4
+ 2x + 2x
4x - 4 = - 4
Add 4 to both sides
4x - 4 = - 4
+ 4 + 4
4x = 0
Divide both sides by 4
4x/4 = 0/4
x = 0
Plug in the new x into one of the original equations
y = 2(0) - 4
y = 0 - 4
y = - 4
