Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 4 - Section 4.1 - Solving Systems of Linear Equations by Graphing - Exercise Set - Page 291: 37

Answer

Infinite solutions

Work Step by Step

Please see the screenshot of the tables for the two equations. Purple line: $6x-y=4$ Green line: $1/2y=-2+3x$ Purple line: $6x-y=4$ $6x-y+y-4=4+y-4$ $6x-4=y$ $y=6x-4$ ($m=6$, y-intercept is -4) Green line $1/2y=-2+3x$ $2*1/2y=2*(-2+3x)$ $y=-4+6x$ $y=6x-4$ ($m=6$, y-intercept is -4) Since the two lines have the same slope and the same y-intercept, the two lines are the same. Thus, there are are an infinite number of solutions for the system.
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