Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Chapter 10 - Systems of Equations and Inequalities - Chapter Review - Review Exercises - Page 814: 6

Answer

$(x,y)=(2,3)$

Work Step by Step

We need to solve the given system of equations: $2x+3y-13=0~~~(1)\\ 3x-2y=0~~~ (2)$ Multiply the first equation by $2$ and the second equation by $3$ and then add them. $4x +9x-26=0 \\ 13x =26 \\ x=2 $ Plug $x=2$ back into one of the equations and solve for y. Thus, $3x-2y=0 \implies (3)(2) =2y \\ y=3$ Therefore, $(x,y)=(2,3)$
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