Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 1 - Section 1.3 - More on Functions and Their Graphs - Exercise Set - Page 200: 120

Answer

The equation in the example is symmetric with respect to the origin.

Work Step by Step

To verify that the equation is symmetric with respect to the origin, we will substitute $y=-y$ and $x=-x$ in the above equation. If after putting $y=-y$ and $x=-x$, the resultant equation is the same as the given equation, then the equation is symmetric with respect to the origin. $\begin{align} & {{y}^{2}}={{x}^{2}}+8 \\ & {{\left( -y \right)}^{2}}={{\left( -x \right)}^{2}}+8\text{ } \\ & {{y}^{2}}={{x}^{2}}+8 \end{align}$ Since the resultant equation is the same as the given equation, the equation is symmetric with respect to the origin.
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