Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 10 - Section 10.1 - The Parabola and the Circle - Exercise Set - Page 610: 19

Answer

See graph

Work Step by Step

$$y=x^2+10x+20$$ $$y-20+25=x^2+10x+25$$ $$y+5=(x+5)^2$$ $$y=(x+5)^2-5$$ The vertex is (-5,-5). Substitute 0 for x. $$y=20$$ $$(0,20)$$ Substitute -1 for x. $$y=11$$ $$(-1,11)$$ Plot these points and connect with a smooth curve.
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