SOLUTION: Solve the system using substitution or elimination: 2x-4=-2 4x+8y=0

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Question 124697: Solve the system using substitution or elimination:
2x-4=-2
4x+8y=0
Answer by gems(12) About Me  (Show Source):
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2x-4=-2
4x+8y=0
using substitution 2x-4=-2
2x=-2+4
2x=2
x=1
if x=1
using 2nd equation 4x+8y=0
4(1)+8y=0
4+8y=0
8y=-4
y=-4/8
y=-1/2