Steph23465
Steph23465
04-02-2016
Mathematics
contestada
Y=-2x-6
Y=x+9
Elimination method
Respuesta :
apologiabiology
apologiabiology
04-02-2016
so we have
y=-2x-6
y=x+9
elimination
multiply second by e
2y=2x+18
just add them
y=-2x-6
2y=2x+18 +
3y=0x+12
3y=12
divide by 3
y=4
subsitue
4=x+9
subtract 9
-5=x
x=-5
y=4
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