Intermediate Algebra (6th Edition)

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

Chapter 10 - Test - Page 633: 11

Answer

$(6,12),(1,2)$

Work Step by Step

$y=x^{2}-5x+6$ Equation $(1)$ $y=2x$ Equation $(2)$ From Equation $(1)$ and Equation $(2)$ $x^{2}-5x+6 = 2x$ $x^{2}-5x+6-2x=0$ $x^{2}-7x+6=0$ By factoring, $(x-6)(x-1)=0$ $x=6$ or $x=1$ Substitute $x$ values in Equation $(2)$ to get corresponding $y$ values. Let $x=6$ $y=2x$ $y=2(6)$ $y=12$ Let $x=1$ $y=2x$ $y=2(1)$ $y=2$ $(6,12),(1,2)$ satisfy the given equations. Solutions are $(6,12),(1,2)$
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