College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter 7 - Conic Sections - Concept and Vocabulary Check - Page 684: 2

Answer

Fill the blanks with ... $(-5,0)$ ... $(5,0)$ ... ... $(-6,0)$ ... $(6,0)$ ...

Work Step by Step

The standard form of the equation of a hyperbola with center at the origin is $\displaystyle \frac{x^{2}}{a^{2}}-\frac{y^{2}}{b^{2}}=1\ \ $ the transverse axis lies on the x-axis or $\displaystyle \frac{y^{2}}{a^{2}}-\frac{x^{2}}{b^{2}}=1 \ \ $ the transverse axis lies on the y-axis. The vertices are $a$ units from the center and the foci are $c$ units from the center. For both equations, $b^{2}=c^{2}-a^{2}$. -------------- $\displaystyle \frac{x^{2}}{25}-\frac{y^{2}}{9}=1$ $a^{2}=25,\quad a=5$, the transverse axis lies on the x-axis. Vertices: $(-5,0)$ and $(5,0)$ $c^{2}=a^{2}+b^{2}$ $c^{2}=25+9=36$ $c=6$ Foci: $(-6,0)$ and $(6,0).$ Fill the blanks with ... $(-5,0)$ ... $(5,0)$ ... ... $(-6,0)$ ... $(6,0)$ ...
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