Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 5 - Linear Functions - 5-1 Rate of Change and Slope - Practice and Problem-Solving Exercises - Page 298: 51



Work Step by Step

In order for the points to lie on the same line, they must have the same slope when paired with each other. For line GH, it is change in y over change in x so (3+1)/(2)=2. For GI, it is (3-7)/(5-7)=2. And for line HI it is (-1-7)/(3-7)=2 All of the slopes are the same so we can assert that the points lie on the same line.
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