Algebra 1

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

Chapter 4 - An Introduction to Functions - 4-1 Using Graphs to Relate Two Quantities - Lesson Check - Page 243: 3


A and B are functions but C is not a function.

Work Step by Step

Equation A and B are functions because for each input there is a unique output (For every x-value there is a unique y value), but c is not a function because there is more than one output value for the input value (there are many y values for one x value, thus it is not a function).
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