I've just recently been introduced to conic sections and i need some help.

For the conic $\displaystyle \frac{x^2}{16}+\frac{y^2}{9}=1$ ,

how do i find the x-, y- intercepts, the coordinates of the foci, the length of the major axis, and the vertices. Also, how do i graph the conic?

How do i find these characteristics of this conic?