1. 4-1 Graphing on the Coordinate Plane
Hubarth
Algebra

2. Origin is the center at (0,0)
Y-axis
Quadrant II
(-,+)
Quadrant I
(+,+)
X-axis
origin
Quadrant
III
(-,-)
Quadrant IV
(+,-)
Ordered pairs are the coordinate of the points. Coordinates are the x and y of each point.
(-2, 4)
x-coordinate is the left
or right movement
left-negative
right-positive
y-coordinate is the up
or down movement
up-positive
down-negative
x-coordinate
or abscissa
y-coordinate
or ordinate

3. Ex 1 Identifying Coordinates
Name the coordinates of each point in the graph below.
M(1, -4)
N(-3, 0)

4. Ex 2 Graphing
Graph the points on the same coordinate plane.
a. P(–1, 3 )
b. Q(0, –2)
a. Move 1 unit to the left of the origin. Then move 3 units up.
b. Since the x-coordinate is 0, point Q is on the y-axis.
Move 2 units down from the origin.

5. Ex 3 Identify Quadrants
In which quadrant or on which axis would you find
each point?
a. (5, 3)
b. (0, –7)
a. Since the x-coordinate is positive and the y-coordinate
is positive the point is in Quadrant I.
b. Since the x-coordinate is 0, the point is on the y-axis.

6. . . . . . Practice Graph the points on the same coordinate plane.
a. A(-3, 1) b. B(2, 0) c. C(6, -3) . A . B . C
2. Write the coordinates of points p and r . p
p(3, 6)
r(-7, -4) . r
3. In which quadrant or on which axis would you find each point?
a. A(-3, 1) b. (2, 0) c. (3, 6) d. (-7, -4)
quadrant II
x-axis
quadrant I
quadrant III