Page 112 - Math Course 1 (Book 1)

Graphing Ordered Pairs and Relations

Mo. 3

Lesson 5

KEY CONCEPTS:
1. Use ordered pairs to locate points.
2. Use tables and graphs to represent relations.
Ordered Pair
(2, 12)
MO. 3 - L5a y-axis

Using Ordered Pairs to
Locate Points origin(0, 0) x-axis

Vocabulary A-Z

Let us learn some vocabulary y-axis

The vertical number line is called the y-axis.
x-axis
coordinate system
The horizontal number line is called the x-axis.
is used to locate points and is formed by the Origin
intersection of two number lines that meet at
right angles at their zero points. is at (0, 0),the point at which the number lines

y intersect.

30 Ordered Pair
is used to locate any point on a coordinate plane.
24

18 (2, 12)
2 is the x - coordinate
12 is the y - coordinate
12

6

1 2 3 4 5
X

Coordinate Plane
x-coordinate
The coordinate system is also called the coordinate
plane.
The f rst number in the coordinates is called the
x-coordinate.

Coordinate plane y-coordinate

The second number in the coordinates is called the
y-coordinate.

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