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This vertical line is called the y-axis.
y
This horizontal line is called the x-axis.
y
x
The x-axis and y-axis separate the coordinate
plane into 4 parts.
y
x
These parts are called Quadrants.
y
x
Quadrant I
y
x
Quadrant II
Quadrant III Quadrant IV
y
x
Each line has a number associated with it.
Just like the dashes on a number line.
y
x-5-5 -4-4 -3-3 -2-2 -1-1 00 11 22 33 44 55
55
44
33
22
11
00
-1-1
-2-2
-3-3
-4-4
-5-5
y
x
This point in the middle of the x-axis and y-axis is called
the originorigin.
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
There are many other points on the coordinate plane.
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
These points are described by ordered pairs.
An ordered pair is a set of parenthesis with two numbers inside. The numbers are separated by a comma.
( 1 , 3 )
( 1 , 3 )
The first number is called the x- coordinate.
( 1 , 3 )
The second number is called the y- coordinate.
( x , y )
( 1 , 3 )
Now, let’s graph this ordered pair on the coordinate plane.
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
( 1 , 3 )
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
( 1 , 3 )
Let’s graph (plot) more points.
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
( 2 , 5 )
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
( 2 , 5 )
Quadrant I
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
(-3 , 4 )
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
(-3 , 4)
Quadrant II
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
(4 , -1)
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
(4 , -1)Quadrant IV
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
(-5 , -3)
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
(-5 , -3)
Quadrant III
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
(-2 , 0)
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
(-2 , 0)Not in any quadrant. This point is on the x-axis.
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
(0 , 4)
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
(0 , 4)
Not in any quadrant. This point is on the y-axis.
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
(0 , 0)
(0,0) is the origin.
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
A
B
D
C
E
F
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
(5 , 4)
B
D
C
E
F
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
(5 , 4)
(1 , 2)
D
C
E
F
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
(5 , 4)
(1 , 2)
D
(-4 , 3)
E
F
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
(5 , 4)
(1 , 2)
(-3 , -1)
(-4 , 3)
E
F
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
(5 , 4)
(1 , 2)
(-3 , -1)
(-4 , 3)
(4 , 0)
F
y
x-5-5 -4-4 -3-3 -2-2 -1-1 11 22 33 44 55
55
44
33
22
11
-1-1
-2-2
-3-3
-4-4
-5-5
(5 , 4)
(1 , 2)
(-3 , -1)
(-4 , 3)
(4 , 0)
(2 , -3)
A scatter plot looks like a line graph without the lines. We just place the dots or in other words, we plot the points.
0
5
10
15
20
25
30
0 1 2 3 4 5 6
Construct a scatter plot to show the relationship between the hours spent practicing shooting darts and the dart shooting score.
Practice Time (hours)
Dart Shooting Score
1 6
2 8
3 13
4 20
5 18
6 27
BOTTOM SIDE
Construct a scatter plot to show the relationship between the hours spent practicing shooting darts and the dart shooting score.
0
5
10
15
20
25
30
0 1 2 3 4 5 6
Practice Time (hrs)
Dar
t Sh
ooti
ng S
core
Construct a scatter plot to show the relationship between the hours spent practicing shooting darts and the dart shooting score.
Practice Time (hours)
Dart Shooting Score
1 6
2 8
3 13
4 20
5 18
6 27
Construct a scatter plot to show the relationship between the hours spent practicing shooting darts and the dart shooting score.
0
5
10
15
20
25
30
0 1 2 3 4 5 6
Practice Time (hrs)
Dar
t Sh
ooti
ng S
core
Construct a scatter plot to show the relationship between the hours spent practicing shooting darts and the dart shooting score.
Practice Time (hours)
Dart Shooting Score
1 6
2 8
3 13
4 20
5 18
6 27
Construct a scatter plot to show the relationship between the hours spent practicing shooting darts and the dart shooting score.
0
5
10
15
20
25
30
0 1 2 3 4 5 6
Practice Time (hrs)
Dar
t Sh
ooti
ng S
core
Construct a scatter plot to show the relationship between the hours spent practicing shooting darts and the dart shooting score.
0
5
10
15
20
25
30
0 1 2 3 4 5 6
Practice Time (hrs)
Dar
t Sh
ooti
ng S
core
Explain the relationship shown in the scatter plot.
0
5
10
15
20
25
30
0 1 2 3 4 5 6
Practice Time (hrs)
Dar
t Sh
ooti
ng S
core
The more time spent practicing, the higher the score.
0
5
10
15
20
25
30
0 1 2 3 4 5 6
Practice Time (hrs)
Dar
t Sh
ooti
ng S
core
Complete problems # 1 – 20 for homework.
Use Graph Paper for ALL graphs.
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