Unformatted text preview: ﬁne y as a function of x.2
However, much like with circles, horizontal parabolas and ellipses, we can split a hyperbola
into pieces, each of which would indeed represent y as a function of x. With the help of your
classmates, use your calculator to graph the hyperbolas given in Exercise 1 above. How many
pieces do you need for a vertical hyperbola? How many for a horizontal hyperbola?
5. Use your calculator to ﬁnd the approximate location of Sasquatch in Example 7.5.5.
6. The location of an earthquake’s epicenter − the point on the surface of the Earth directly
above where the earthquake actually occurred − can be determined by a process similar to
how we located Sasquatch in Example 7.5.5. (As we said back in Exercise 6a in Section 6.1,
earthquakes are complicated events and it is not our intent to provide a complete discussion
2 We will see later in the text that the graphs of certain rotated hyperbolas pass the Vertical Line Test. 7.5 Hyperbolas 445 of the science involved in them. Instead,...
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