Idiot\'s Guides Basic Math and Pre-Algebra

330 Appendix B

58. 3x – y = 7


59. y = 5

-2 062

-2

2

4

6

-4

-6

-5-6-7-8 -4 -1-3 1345 789

-8

-9

-1

-3

-5

-7

8

9

1

3

5

7

10 11 12

-10

10

y

x

-2 062

-2

2

4

6

-4

-6

-5-6-7-8 -4 -1-3 1345 789

-8

-9

-1

-3

-5

-7

8

9

1

3

5

7

10 11 12

-10

10

y

x

60. x = -4

For questions 61 and 62, several answers are

possible. Possible answers are given.

61. A ray: RA, RP, TE, and others


62. A line segment: IC, IT, TC, PR, and others


63. An acute angle: PRA


64. An obtuse angle: AR T


65. A pair of vertical angles: ITR and CTE
    or ITE and RTC


66. The angle that corresponds to ’HDE is
    ’JEF.


67. ’CDH and ’BEF are a pair of alternate
    exterior angles.


68. If m’ADC = 20r, m’DEJ = 180 – 20 = 160r.


69. The measure of ’HJK is 90r.


70. If m’DEJ = 150r, the measure of ’HDE is
    180 – 150 = 30r.

-2 062

-2

2

4

6

-4

-6

-5-6-7-8 -4 -1-3 134 5 789

-8

-9

-1

-3

-5

-7

8

9

1

3

5

7

10 11 12

-10

10

y

x