Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 5 - Cumulative Test for Chapters 3-5 - Page 416: 17

Answer

See graph

Work Step by Step

Following the standard form of an ellipse $x$-axis which is $\frac{(x-h)^2}{a^2}+\frac{(y-k)^2}{b^2}=1$: $$\frac{(x-2)^2}{2^2}+\frac{(y-(-1))^2}{3^2}=1$$ $$(h,k)=(2,-1),a=2,b=3$$ Finding the vertices with major axis the $y-axis$: $$(h,k+b)=(2,-1+3)=(2,2)$$ $$(h,k-b)=(2,-1-3)=(2,-4)$$ Finding the co-vertices with minor axis the $x-axis$: $$(h-a,k)=(2-2,-1)=(0,-1)$$ $$(h+a,k)=(2+2,-1)=(4,-1)$$ Plot the center and the vertices. Draw a smooth curve passing the vertices. Thus, the sketch of the conics is as shown.
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