gjunious2007
gjunious2007
29-05-2014
Mathematics
contestada
Intercepts of 9x^2+9y=81
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Ryan2
Ryan2
09-07-2014
[tex]x=0\\ \\ 9x^2+9y=81\\ \\ 9.0^2+9y=81\\ \\ 9y=81\\ \\ y=\frac{81}{9}\\ \\ \boxed{y=9}[/tex]
[tex]y=0\\ \\ 9x^2+9.0=81\\ \\ 9x^2=81\\ \\ x^2=\frac{81}{9}\\ \\ x^2=9\\ \\ \boxed{x= \pm 3}[/tex]
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