1) The equation of the hyperbola with vertices (3 , 0), (-3 , 0) and semi-latus rectum 4 is given by : A) $4x^{2}-3y^{2}+36=0$ B) $4x^{2}-3y^{2}+12=0$ C) $4x^{2}-3y^{2}-36=0$ D) $4x^{2}+3y^{2}-25=0$ Answer: Option CExplanation:We have a = 3 and $\frac{b^{2}}{a}$ = 4 → b2 = 12 Hence, the equation of the hyperbola is $\frac{x^{2}}{9}-\frac{y^{2}}{12}=1$ $4x^{2}-3y^{2}= 36$ = $4x^{2}-3y^{2}-36=0$