Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 10 - Analytic Geometry - Chapter 10 Test Prep - Review Exercises - Page 1001: 30

Answer

$$\eqalign{ & {\text{Vertices}}:\left( {0, \pm 5} \right) \cr & {\text{Asymptotes: }}y = \pm \frac{5}{3}x \cr & {\text{domain: }}\left( { - \infty , + \infty } \right) \cr & {\text{range: }}\left( { - \infty ,5} \right] \cup \left[ {5,\infty } \right) \cr} $$

Work Step by Step

$$\eqalign{ & \frac{{{y^2}}}{{25}} - \frac{{{x^2}}}{9} = 1 \cr & {\text{The equation is written in the form }}\frac{{{y^2}}}{{{a^2}}} - \frac{{{x^2}}}{{{b^2}}} = 1 \cr & \frac{{{y^2}}}{{25}} - \frac{{{x^2}}}{9} = 1,{\text{ then }}a = 5,\,\,b = 3 \cr & \cr & {\text{Therefore,}} \cr & {\text{Center }}\left( {0,0} \right) \cr & {\text{Vertices: }}\left( {0, \pm a} \right):\left( {0, \pm 5} \right) \cr & \cr & {\text{Asymptotes: }}y = \pm \frac{a}{b}x \cr & {\text{Asymptotes: }}y = \pm \frac{5}{3}x \cr & \cr & {\text{The domain of the hyperbola is }}\left( { - \infty , + \infty } \right) \cr & {\text{The range of the hyperbola is: }}\left( { - \infty ,a} \right] \cup \left[ {a,\infty } \right) \cr & {\text{range: }}\left( { - \infty ,5} \right] \cup \left[ {5,\infty } \right) \cr & \cr & {\text{Graph}} \cr} $$
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