Explanations 
Textbooks 
Flashcards 
91影视 AI 
Notes 
Study Plans 
Study Sets 
Find a degree 
Magazine Chapter 3: Q.494 (page 360)
In the following exercise, use the mapping of the relation to 鈸� list the ordered pairs of the relation 鈸� find the domain of the relation 鈸� find the range of the relation
The mapping below shows the average weight of a child according to age.
Short Answer
From the given mapping,
Order pairs of the relation are,
{(1, 20), (2, 25), (3, 30), (4, 35), (5, 40),
(6, 45), (7, 50)}.
Domain of this relation is,
{1, 2, 3, 4, 5, 6, 7}
Range of this relation is,
{20, 25, 30, 35, 40, 45, 50}
Step by step solution
Step 1. Given information
We have given,
Step 2. Concept
A relation is any set of ordered pairs, (x, y).
All the x-values in the ordered pairs together make up the domain.
All the y-values in the ordered pairs together make up the range.
Part (a) Step 1. Explanation
We have,
We know that,
A relation is any set of ordered pairs, (x, y).
So from given information order pairs of relation are:
{(1, 20), (2, 25), (3, 30), (4, 35), (5, 40),
(6, 45), (7, 50)}.
Part (a) Step 2. Conclusion
Hence, From the given mapping,
Order pairs of the relation are,
{(1, 20), (2, 25), (3, 30), (4, 35), (5, 40),
(6, 45), (7, 50)}.
Part (b) Step 1. Explanation
We have given,
Also order pairs of relation are:
{(1, 20), (2, 25), (3, 30), (4, 35), (5, 40),(6,45), (7, 50)}.
We know that, All the x-values in the ordered pairs together make up the domain.
Therefore domain of the relation is,
{1, 2, 3, 4, 5, 6, 7}.
Part (b) Step 2. Conclusion
Hence,
Domain of the relation is,
{1, 2, 3, 4, 5, 6, 7}
Part (c) Step 1. Explanation
We have,
Also from the part a we have order pairs of the relation are:
{(1, 20), (2, 25), (3, 30), (4, 35), (5, 40),
(6, 45), (7, 50)}.
We know that, All the y-values in the ordered pairs together make up the range.
Therefore
Range of this relation is,
{20, 25, 30, 35, 40, 45, 50}.
Part (c) Step 2. Conclusion
Hence,
Range of this relation
{(1, 20), (2, 25), (3, 30), (4, 35), (5, 40),
(6, 45), (7, 50)} is,
{20, 25, 30, 35, 40, 45, 50}.
Over 30 million students worldwide already upgrade their learning with 91影视!
