The document provides lesson materials on tables and graphs, including: - Examples of identifying ordered pairs from tables and graphing the points on a coordinate plane. The examples show a direct relationship between variables. - A warm up on identifying points in quadrants. - An example application showing pounds of food purchased and its cost, with the relationship that cost is pounds multiplied by a rate. - A lesson quiz testing the skills of writing ordered pairs from a table and graphing the points.

1. 4-2 Tables and Graphs
Warm Up
Problem of the Day
Lesson Presentation
Course 2

2. 4-2 Tables and Graphs
Warm Up
Identify the quadrant that contains each point.
1. (6, –4)
lV
2. (5, 7)
l
3. (–3, –3)
lll
4. (–1, 10)
ll
Course 2

3. 4-2 Tables and Graphs
Problem of the Day
In which quadrant are all the points
whose x-coordinate is negative and
whose y-coordinate is positive located?
ll
Course 2

4. 4-2 Tables and Graphs
Learn to identify and graph ordered pairs
from a table of values.
Course 2

5. 4-2 Tables and Graphs
In the wild, giant anteaters nurse their young. At
Houston Zoo, baby giant anteaters are bottle-fed.
By the time a baby is 3 months old, it drinks
about 0.5 L of formula each day. The table shows
the amount of formula needed to feed one baby
giant anteater over several days.
Course 2

6. 4-2 Tables and Graphs
Additional Example 1: Identifying Ordered Pairs from
a Table of Values
Write the ordered pairs from the table.
x
y
(x, y)
−2
4
0
5
−1
7
9
(−2, −1)
(4, 7)
(0, 9)
−3
(5, −3)
The ordered pairs are (−2, −1), (4, 7), (0, 9),
and (5, −3).
Course 2

7. 4-2 Tables and Graphs
Check It Out: Example 1
Write the ordered pairs from the table.
x
3
2
8
−1
y
(x, y)
−4
−8
3
0
(3, −4)
(2, −8)
(8, 3)
(−1, 0)
The ordered pairs are (3, −4), (2, −8), (8, 3),
and (−1, 0).
Course 2

8. 4-2 Tables and Graphs
Additional Example 2: Graphing Ordered Pairs from a
Table of Values
Write and graph the ordered pairs from the table.
x
1
−1
3
−5
y
4
−2
2
0
y
5
4
3
(–5, 0)
2
• (3, 2)
1
x
•
0
–5 –4 –3 –2 –1
–1
(–1, –2) –2
•
–3
–4
The ordered pairs are
–5
(1, 4), (−1, −2), (3, 2),
and (−5, 0).
Plot the points on a coordinate plane.
Course 2
• (1, 4)
1 2 3
4 5

9. 4-2 Tables and Graphs
Check It Out: Example 2
Write and graph the ordered pairs from the table.
x
2
−3
3
−2
y
3
−3
−2
4
y
5
(–2, 4) •
4
3
2
1
0
–5 –4 –3 –2 –1
–1
–2
(–3, –3) •
–3
–4
The ordered pairs are
–5
(2, 3), (−3, −3), (3, 2),
and (−2, 4).
Plot the points on a coordinate plane.
Course 2
• (2, 3)
x
1 2 3
4 5
• (3, –2)

10. 4-2 Tables and Graphs
Additional Example 3: Application
Graph the data given in the table showing the
number of pounds of food purchased and its cost.
What appears to be the relationship between the
number of pounds and the cost in the table below?
Number of Pounds
1
2
3
4
Cost($)
1.85
3.70
5.55
7.40
Write the ordered pairs from the table.
Number of Pounds
1
2
3
4
Cost($)
1.85
3.70
5.55
7.40
(x, y)
(1, 1.85)
(2, 3.70)
(3, 5.55)
(4, 7.40)
Course 2

11. 4-2 Tables and Graphs
Additional Example 3 Continued
The ordered pairs are (1, 1.85), (2, 3.70), (3, 5.55),
and (4, 7.40).
The graph shows
that the cost is the
number of pounds
multiplied by 1.85.
Course 2
10
8
Cost ($)
Now plot the
points on a
coordinate plane.
Label the axes.
6
4
2
0
0
2
4
Number of Pounds
6

12. 4-2 Tables and Graphs
Check It Out: Example 3
Graph the data in the table showing the
number of days and its cost. What appears to
be the relationship between the number of
days and the cost shown in the table below?
Number of Days
3
4
5
6
Cost($)
3.75
5.00
6.25
7.50
Write the ordered pairs from the table.
Number of Days
3
4
5
6
Cost($)
3.75
5.00
6.25
7.50
(x, y)
(3, 3.75)
(4, 5.00)
(5, 6.25)
(6, 7.50)
Course 2

13. 4-2 Tables and Graphs
Check It Out: Example 3 Continued
The ordered pairs are (3, 3.75), (4, 5.00), (5, 6.25),
and (6, 7.50).
The graph shows
that the cost is
the number of
days multiplied by
1.25.
8
7
6
Cost ($)
Now plot the
points on a
coordinate plane.
Label the axes.
5
4
3
2
1
0
2
3
4
5
Number of Days
Course 2
6

14. 4-2 Tables Lesson Title Here
Insert and Graphs
Lesson Quiz: Part I
1. Write and graph the ordered pairs from the
table.
y
10
x
y
2
6
–10 10
–4 –4
–6 –8
(-10, 10) •
8
6
• (2, 6)
4
2
0
–10–8 –6 –4 –2
–2
(-4, -4) • –4
x
2 4 6
8 10
–6
(-6, -8) •
–8
–10
The ordered pairs are (2, 6), (-10, 10), (-4, -4), and (-6, -8).
Course 2

15. 4-2 Tables Lesson Title Here
Insert and Graphs
Lesson Quiz: Part II
2. The table shows the number of hours a student
studies for a test and scores. Graph the data to
find the number of correct answers after
studying for 6 hours. What appears to be the
relationship between the number of hours of
study and the score?
Hours
1
2
3
4
Scores
15
30
45
60
90; the score is multiplied by 15.
Course 2