Finite Math and Applied Calculus (6th Edition)

Published by Brooks Cole
ISBN 10: 1133607705
ISBN 13: 978-1-13360-770-0

Chapter 3 - Section 3.1 - Systems of Two Equations in Two Unknowns - Exercises - Page 185: 20

Answer

The solution of the system of equations is approximately the ordered pairs x,y: $(5.6,-5.4)$

Work Step by Step

By looking at graph, the solution of the system of equations is approximately the ordered pairs x,y: $(5.6,-5.4)$. If we want to check the solution we can substitute this point into the equations: 1) $100x+4.5y=540$ 1) $100(5.6)+4.5(-5.4)=560-24.3=535.7\approx540$ 2) $1.05x+1.1y=0$ 2) $1.05(5.6)+1.1(-5.4)=5.88-5.94=-.06\approx0$ The solution of the system of equations is approximately the ordered pairs x,y: $(5.6,-5.4)$
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