What equation is graphed? 1. [tex]\frac{x^{2} }{3} -\frac{y^{2} }{4} =1[/tex] 2. [tex]\frac{x^2}{16}-\frac{y^9}{9}=1[/tex] 3. [tex]\frac{x^2}{9}-\frac{y^2}{16}=1[/tex] 4. [tex]\frac{x^2}{4}-\frac{y^2}{3}=1[/tex]