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Casio fx-9750G PLUS User Manual

Page 226

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• A hyperbola is the locus of points related to two given points F and F’ such

that the difference in distances of each point from the two given points is
constant.

Points F and F’ are the “foci,” points A and A’ where the hyperbola intersects
the x-axis are the “vertexes,” the x-coordinate values of vertexes A and A’ are
called x-intercepts, the y-coordinate values of vertexes A and A’ are called y-

intercepts, and straight lines l and l' , which get closer to the hyperbola as
they move away from the foci are “asymptotes.”

14 - 2

Graphing a Conic Section

Vertex
A’

Vertex

A

Focus F'

Focus F

Asymptote

l

Asymptote

l'

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