Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 9 Quadratic Relations and Conic Sections - 9.3 Graph and Write Equations of Circles - 9.3 Exercises - Mixed Review - Page 632: 74


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Work Step by Step

Add the first equation to the second: $4x=-8\\x=-2$ Multiply the third equation by $2$ and add it to the second equation: $7x+7z=14$ Find $z$: $7(-2)+7z=14\\z=4$ Find $y$: $3(-2)-2y+4=-18\\y=8$
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