To Find:The domain of the relation and draw its graph .Is relation is a function.
Answer to Problem 12WE
The domain of the given relation is {-1,0,1}and range is {-1,0,1}.
The relation is not function.
Explanation of Solution
Given information:Given relation is
Calculation:
Since
Now, if x =-1, then y =0 or -1 ; if x =0, then y =1,0, or -1; and finally if x =1, then y =0 .So we have the following set of points:
(-1,0),(0,1),(0,0),(0,-1),(1,0).
Domain is {-1,0,1} and range is {-1,0,1}.
The relation is not function since for some x -values, there are more than one corresponding y- value. For example, when x= 0, y is either 1,0, or -1.
Sketch the graph of the given relation using the points of the relation.
Chapter 3 Solutions
Algebra and Trigonometry: Structure and Method, Book 2
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