Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 11 - Section 11.4 - Shifted Conics - 11.4 Exercises - Page 814: 4

Answer

See graph and explanations.

Work Step by Step

See graph, use $F$ for $Focus$, $V$ for $Vertex$, and $A$ for $Asymptote$, the second hyperbola shifted 3 units right and 1 unit up from the original, which has been reflected in the new coordinates of the foci and vertexes. The new asymptotes will also shift while keeping slopes unchanged. To find the new asymptote equations, use the old slopes and a new point $(3,1)$ which came from the shifts from $(0,0)$. Assume one asymptote is $y=\frac{3}{4}x+b$, plug-in $(3,1)$ to get $\frac{9}{4}+b=1$ or $b=-\frac{5}{4}$. For the other asymptote, $y=-\frac{3}{4}x+c$, plug-in $(3,1)$ to get $-\frac{9}{4}+c=1$ or $c=\frac{13}{4}$.
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