Answer
The given ordered triple is not a solution of the system.
Work Step by Step
$(2,8,4)$
$3x-y+5z=34$
$3(2)-1(8)+5(4)=34$
$6-8+20=34$
$18\ne34$
Since $18\ne34$ we don't even have to check other equations.
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 3 Linear Systems and Matrices - 3.4 Solve Systems of Linear Equations in Three Variables - 3.4 Exercises - Skill Practice - Page 182: 7
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