Trigonometry (11th Edition) Clone

Published by Pearson
ISBN 10: 978-0-13-421743-7
ISBN 13: 978-0-13421-743-7

Appendix D - Graphing Techniques - Exercises - Page 447: 11b

Answer

A

Work Step by Step

According to the rule of vertical translations, it is known that the graph of $y=f(x)-c$ is essentially the same as $y=f(x)$ except that it is shifted $c$ units downwards. Using this logic, it can be deduced that the graph of $y=x^{2}-2$ is essentially the same as $y=x^{2}$ except that it is shifted $2$ units downwards. We know that the equation of $y=x^{2}$ is a parabola that opens upwards with its vertex at the origin. Therefore, we need to find a graph that is essentially the same as the graph of $y=x^{2}$ except that it is shifted two units down. This exact graph is found in option A.
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