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anonymous
 4 years ago
9x + y = 0
18x + 4y = –8
anonymous
 4 years ago
9x + y = 0 18x + 4y = –8

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0What we trying to do dessie91?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0You can either use substitution or elimination here. Substitution: y=9x 18x+4(9x)=8 18x=8 x=4/9 9x+y=0 9(4/9)+y=0 4+y=0 y=4 For elimination: (9x+y=0) <Multiply this by 2 to eliminate x and solve for y 18x+4y=8 18x2y=0 18x+4y=8 Add these equations together; you get: 2y=8 y=4 Plug 4 back into an equation and solve for x: 9x4=0 9x=4 x=4/9
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