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In $6-11 :$ a. Determine whether or not each graph represents a function. b. Find the domain for each graph. c. Find the range for each graph.

The y-values range from $-1$ and below and 1 and above.The range is $(-\infty,-1] \cup[1,+\infty)$

Algebra

Chapter 4

RELATIONS AND FUNCTIONS

Section 1

Relations and Functions

An Introduction to Geometry

Functions

Linear Functions

Polynomials

McMaster University

Harvey Mudd College

Idaho State University

Lectures

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So first things first. Is this a function or not? This is not a function. Why? Because he input zero as multiple outputs and those outputs are negative one and positive one. So not a function be. The domain is all real numbers because this graph goes infinitely from left to right. So all real members and see the range. Let's see, it goes infinitely from the bottom of the graph. Negative infinity to positive infinity, but nothing in between. Negative one and positive one. So how about we'll say X says that X is less or no? Why such that? Why is less than or equal to negative one? Or I is greater than or equal to output the or equal to in later, um one. So come back here and put the symbol in here.

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