1. Lesson 4.1- The Coordinate Plane, pg. 192
Goals: To locate points on the coordinate plane.
To graph points on a coordinate plane.

2. Vocabulary Axes: points are located in reference to two perpendicular
number lines y x 5 -5
Y-axis: the vertical
number line
Coordinate plane-
the plane containing
the x-and y-axes
X-axis: the horizontal
Number line
Origin: the axes
Intersect at their zero
points

3. Ordered pair: points in the coordinate plane (x, y)
X-coordinate: corresponds to the numbers on the x-axis.
Y-coordinate: corresponds to the numbers on the y-axis.

4. QUADRANTS in the Coordinate Planey x 5 -5
The x-axis and y-axis separate
the coordinate plane into four
regions. II
(-,+) I
(+,+) IV
(+,-)
III
(-,-)

5. Ex. 1: Identify Quadrants5 -5
a) (4, 0)
b) (2, -1)
c) (0, 3)
d) (-4, -2)

6. Ex. 2: Recognizing Ordered Pairs
Name the coordinates of each point in the graph. Q w P P
b. T
c. Q
d. W
e. V v T

7. Plotting Points (x,y) Start at the origin.
The first number tells you how much to move left or right on the horizontal number line.
From there, the second number tells you how much to move up or down.
Draw a dot & label it.

8. Ex. 3: Plot each point on a coordinate plane
b) (2, -1)
c) (0, 3)
(-4, -2)
(3, 1)
(2, -5)