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

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

3. 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 4-2 Tables and Graphs

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

5. 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 4-2 Tables and Graphs

6. Write the ordered pairs from the table. The ordered pairs are (2, 1), (4, 7), (0, 9), and (5, 3). Additional Example 1: Identifying Ordered Pairs from a Table of Values Course 2 4-2 Tables and Graphs xy 22 11 47 09 5 33 (x, y) (  2,  1) (4, 7) (0, 9) (5,  3)

7. Write the ordered pairs from the table. The ordered pairs are (3, 4), (2, 8), (8, 3), and (1, 0). Check It Out: Example 1 Course 2 4-2 Tables and Graphs xy 3 44 2 88 83 11 0 (x, y) (3,  4) (2,  8) (8, 3) (  1, 0)

8. Write and graph the ordered pairs from the table. The ordered pairs are (1, 4), (1, 2), (3, 2), and (5, 0). Additional Example 2: Graphing Ordered Pairs from a Table of Values Course 2 4-2 Tables and Graphs x y –2 2 2 –4 4 4 –1 –3 –5 5 3 1 1 3 5 0 –3 –5 –1 xy 14 1122 32 55 0 (1, 4) (–1, –2) (3, 2) (–5, 0) Plot the points on a coordinate plane.

9. Write and graph the ordered pairs from the table. The ordered pairs are (2, 3), (3, 3), (3, 2), and (2, 4). Check It Out: Example 2 Course 2 4-2 Tables and Graphs x y –2 2 2 –4 4 4 –1 –3 –5 5 3 1 1 3 5 0 –3 –5 –1 xy 23 33 33 3 22 22 4 (2, 3) (–3, –3) (3, –2) (–2, 4) Plot the points on a coordinate plane.

10. 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? Additional Example 3: Application Course 2 4-2 Tables and Graphs Number of Pounds1234 Cost($)1.853.705.557.40 Write the ordered pairs from the table. Number of Pounds1234 Cost($)1.853.705.557.40 (x, y)(1, 1.85)(2, 3.70)(3, 5.55)(4, 7.40)

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

12. 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? Check It Out: Example 3 Course 2 4-2 Tables and Graphs Number of Days3456 Cost($)3.755.006.257.50 Write the ordered pairs from the table. Number of Days3456 Cost($)3.755.006.257.50 (x, y)(3, 3.75)(4, 5.00)(5, 6.25)(6, 7.50)

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

14. Lesson Quiz: Part I Insert Lesson Title Here 1. Write and graph the ordered pairs from the table. Course 2 4-2 Tables and Graphs xy 26 –1010 –4 –6–8 x y –4 4 4 –8 8 8 –2 –6 –10 10 6 2 2 6 0 –6 –10 –2 (2, 6) (-10, 10) (-4, -4) (-6, -8) The ordered pairs are (2, 6), (-10, 10), (-4, -4), and (-6, -8).

15. Lesson Quiz: Part II Insert Lesson Title Here 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? Course 2 4-2 Tables and Graphs 90; the score is multiplied by 15. Hours1234 Scores15304560