Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 9 - Quadratic Functions and Equations - Chapter Review - 9-1 and 9-2 Graphing Quadratic Functions - Page 590: 9


Please see the graph.

Work Step by Step

$y=-.5x^2+4x+1$ vertex $x=-b/2a$ $x=-4/2*-.5$ $x=-4/-1 = 4$ $y=-.5x^2+4x+1$ $y=-.5*4^2+4*4+1$ $y=-.5*16+16+1$ $y=-8+17$ $y=9$ $(4,9)$ One other point on the line $x=0$ $y=-.5x^2+4x+1$ $y=-.5*0^2+4*0+1$ $y=-.5*0+0+1$ $y=0+0+1 = 1$ $(0,1)$ The vertex is labeled, and the axis of symmetry is the blue line.
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