Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 13 - Section 13.4 - Nonlinear Inequalities and Systems of Inequalities - Exercise Set - Page 954: 30

Answer

Please see the graph.

Work Step by Step

Red inequality: $x^{2}+\left(y-2\right)^{2}\ge9$ Blue inequality: $\frac{x^{2}}{4}+\frac{y^{2}}{25}<1$ $x^{2}+\left(y-2\right)^{2}\ge9$ This inequality is for a circle with radius 3, and this circle is shifted up two units (compared to a circle centered at the origin). If a point is outside the circle, then it is part of the solution set. $\frac{x^{2}}{4}+\frac{y^{2}}{25}<1$ This graph is for an ellipse. We pick the point $(0,0)$ to determine whether to shade inside the ellipse or outside the ellipse. $\frac{x^{2}}{4}+\frac{y^{2}}{25}<1$ $\frac{0^{2}}{4}+\frac{0^{2}}{25}<1$ $\frac{0}{4}+\frac{0}{25}<1$ $0 + 0 < 1$ $0 < 1$ (true, so we shade inside the ellipse) The solution set of the inequalities is the overlap of the two graphs.
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