7th Grade Math

84 Integers

= Step-by-Step Solutions begin on page R1.

Extra Practice begins on page EP2.

Write the ordered pair corresponding to each y

0 x

+

)

(

%

&

,

• 
  

#

" *

'

$

point graphed at the right. Then state the

quadrant or axis on which each point is located.

Example 1

10. A 11. B 12. C


11. D 14. E 1515 F


12. G 17. H 18. I


13. J 20. K 21. L

Example 2 Graph and label each point on a coordinate plane.

22. M(5, 6) 23. N(-2, 10) 24. P(7, -8) 25. Q(3, 0)


23. R(-1, -7) 27. S(8, 1) 28. T(-3, 7) 29. U(5, -2)


24. V(0, 6) 31. W(-5, -7) 32. X(-4, 0) 33. Y(0, -5)

Example 3 34. GEOGRAPHY Use the world map.

Prime

Meridian

Prime

Meridian

Equator Equator

• 180 ̊-150 ̊-120 ̊-90 ̊-60 ̊-30 ̊0 ̊30 ̊60 ̊90 ̊120 ̊ 150 ̊180 ̊90 ̊

0 ̊

0 ̊ 0 ̊

30 ̊

15 ̊

• 15 ̊ -15 ̊

15 ̊

45 ̊

• 45 ̊ -45 ̊

45 ̊

• 30 ̊

30 ̊

• 30 ̊

60 ̊

75 ̊

60 ̊

• 60 ̊
  
  
  • 75 ̊
  
  
  
  

75 ̊

• 75 ̊
  
  
  • 60 ̊
  
  
  
  

90 ̊

• 90 ̊-180 ̊-150 ̊-120 ̊-90 ̊-60 ̊-30 ̊ 30 ̊60 ̊90 ̊ 120 ̊ 150 ̊180 ̊-90 ̊

a. The world map can be divided into a coordinate plane where (x, y)

represents (degrees longitude, degrees latitude). In what continent is

the point (30° longitude, -15° latitude) located?

b. Which of the continents is located in Quadrant II?

c. In what continent is the point (-60° longitude, 0° latitude) located?

d. Name a continent on the map that is located in Quadrant I.

Graph and label each point on a coordinate plane.

B 3535 X(1.5, 3.5) 36. Y (^) ( 3 41 , 2 21 ) 37. Z (^) (2, 1 _^23 )

38. GEOMETRY Graph four points on a coordinate plane so that they form a
    square when connected. Identify the ordered pairs.


39. RESEARCH Use the Internet or other resources to explain why the
    coordinate plane is sometimes called the Cartesian plane.

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