Question

For the equation of ellipse, $\frac{x^2}{4}+\frac{y^2}{9}=1$ what does S correspond to

• A. $S=\frac{x^2}{4}+\frac{y^2}{9}-1$
• B. $S=\frac{x}{4}+\frac{y}{9}-1$
• C. $S=\frac{xy}{4}+\frac{xy}{9}-1$
• D. $S=\frac{x^2}{4}+\frac{y^2}{9}+1$

Answer 1

The correct option is A $S=\frac{x^2}{4}+\frac{y^2}{9}-1$

S corresponds to $S=\frac{x^2}{4}+\frac{y^2}{9}-1$