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 953: 7

Answer

Please see the graph.

Work Step by Step

$y > (x-1)^2 -3$ $y=(x-1)^2-3$ $y=(x-1)(x-1)-3$ $y=x*x+x*-1+x*-1+(-1)(-1)-3$ $y=x^2-2x+1-3$ $y=x^2-2x-2$ $a=1$, $b=-2$, $c=2$ $x=-b/2a$ $x=-(-2)/2(1)$ $x=2/2$ $x=1$ The axis of symmetry (and the vertex) of the graph is at $x=1$. We pick the point $(1,10)$ to see what side of the line to shade. $y > (x-1)^2 -3$ $10 > (1-1)^2 -3$ $10 > 0^2 -3$ $10 > 0-3$ $10 > -3$ (true, so we shade the side of the line with this point)
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