This hyperbola is centered at the origin. Find its equation.
Foci: (-9,0) and (9,0)
Vertices: (-2,0) and (2,0)
[ ? 12
2
= 1

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex