Page 49 - Math Course 1 (Book 1)

Algebraic Functions and Relations

Mo. 1

Lesson 9

KEY CONCEPTS: Table
1. Represent relations as sets of ordered X Y
pairs, tables, mappings, and graphs. List the x-coordinates in the f rst
2. Find the inverse of a relation. column and the corresponding y 4 3
coordinates in the second
column. -2 -1

MO. 1 - L9a -3 2

Ordered Pairs: Relations 2 -4

0 -4
Graph
Vocabulary A-Z Graph each ordered pair on a

Let us learn some vocabulary coordinate plane.
y
X Y

4 3
Mapping
-2 -1 o x
A mapping illustrates how each element of the
domain is paired with an element in the range. -3 2
2 -4
Mapping
X Y 0 -4

Mapping
1 2
List the x-values in set X and the y-values in set
Y. Draw an arrow from the x-value to the
-2 2 corresponding y-value.

0 -3 X Y

4 3
-2 -1
-3 2
Let’s Begin 2 -4
0

Determine the domain and range for the relation
Represent a Relation {(4, 3), (–2, –1), (–3, 2), (2, –4), (0, –4)}.

Examples Answer The domain for this relation
is {-3, -2, 0, 2, 4.}
The range is {-4, -1, 2, 3}

Express the relation
{(4, 3), (–2, –1), (–3, 2), (2, –4), (0, –4)}
as a table, a graph, and a mapping.

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