1 answer:
1. Substitute y in the first equation into the second one.
x+4=-2x-2
Add 2x to both sides
3x+4=-2
Subtract 4 from both sides
3x=-6
Divide both sides by 3
x=-2
Plug in the x value
y=-2+4
y=2
Final answer: (-2,2)
2. There are 0 solutions because the lines are parallel and will never cross each other
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