Hyperbola:
A hyperbola is locus of all the points,in a plane ,such that, if you take a single point among all those points ,and find the distance from two fixed points called foci, and get the modulus of difference of those two distances ,it gives a constant value.
Let us consider the set of all those points by (x,y).
And foci on two sides of X axis is represented by F(p,0) and F'(-p,0).
This line is called Major Axis.

Where, (s,0) and (-s,0) are the coordinates of two vertices of hyperbola.