Algebra 1

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

Chapter 4 - An Introduction to Functions - 4-5 Writing a Function Rule - Practice and Problem-Solving Exercises: 13

Answer

It is not a function

Work Step by Step

A vertical line at x=1 intersects two points on the graph. In order to pass the vertical line test, we must be able to put a vertical line anywhere on the graph and not have it intersect the curve on the graph multiple times. Thus, this is not a function as it fails the vertical line test.
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