To find: Which of the following relations is a function.
Answer to Problem 9PFA
Explanation of Solution
Concept used:
The relation that defines the set of inputs to the set of outputs is called functions.
In function, each input should have exactly one output.
All functions are relations but all relations are not function.
For Option-A
Given relation is
Here in given relation first elements are
As here each input has exactly one output.
Therefore, given relation is a Function.
For Option-B
Given relation is
Here in given relation first elements are
Here for input of element
They are
As each input doesn’t have exactly one output
So, given relation is not a function.
For Option-C
Given relation is
Here in given relation first elements are
Here for input element
As each input doesn’t have exactly one output
So, given relation is not a function.
For Option-D
Given relation is
Here in given relation first elements are
Here for input element
As each input doesn’t have exactly one output
So, given relation is not a function.
So, only relation
Chapter 3 Solutions
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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