1. Graphing Square Root Functions
ALGEBRA 1 LESSON 11-6
pages 616–619  Exercises
1. x 2
2. x
3. x 0
4. x –7
5. x –3
6. x 5
7. x –
8. x –2
9. x
13. x y
0 0
3 3
5.3 4
14. x ƒ(x)
1 3
4 6
15. x y
1 –3
4 –6
> –
10. x y
0 0
2 2
4.5 3
11. x ƒ(x)
1 2
4 4
12. x y
2 0
3 2
6 4
> – 3 4
> –
> –
> –
> – 5 3
> –
> –
> – 4 3
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2. Graphing Square Root Functions
ALGEBRA 1 LESSON 11-6
22.
23.
24.
25.
26.
27.
16. h v
0  0
1  8
4 16
17. D
18. A
19. C
20. B
21.
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3. Graphing Square Root Functions
ALGEBRA 1 LESSON 11-6
28.
29.
30. x 4; y 0
31. x 4; y 0
32. Form an inequality setting
the radicand Solve for x.
Answers may vary. Sample:
y = x – 2
Domain: x –
x 2
33. a-d. Answers may vary. Samples:
a. y = x + 2
b. y = x + 2
c. y = 2 x
d. Check students’ work.
34. Translate the graph of
y = x  8 units to the left.
35. Translate the graph of
y = x  10 units down.
36. Translate the graph of
y = x  12 units up.
37. Translate the graph of
y = x  9 units right.
> –
> –
< –
> –
> –
> –
> –
11-6

4. Graphing Square Root Functions
ALGEBRA 1 LESSON 11-6
38. x y
2.5 0
3.5 1
6.5 2
39. x ƒ(x)
0 0
1 4
2 5.7
4 8
40. x y
–6 0
–5 1
–2 2
0 2.4
41. x y
0 0
2 1
4 1.4
8 2
42. x y
2 3
3 4
6 5  
43. x ƒ(x)
–2 –4
–1 –3
2 –2
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5. Graphing Square Root Functions
ALGEBRA 1 LESSON 11-6
44. x y
0 3
1 4.4
2 5
3 5.4 
45. x y
–3 1
–2 2.4
–1 3
0 3.4
46. x y
1 –2
2 –0.3
3   0.4
4   1
47. B
48. D
49. A
50. C
51. a. p > 0 b.
c. about 45 lb/in.2
52. a. no
b. Answers may vary.
Sample: The graph
of y = x is the first
quadrant of the graph
of x = y2.
c. y = – x
53. y = 3 x rises more
steeply because
3 x > 3x for all
positive values of x.
54. False; x must equal 81.
55. False; only combine
like terms.
56. true
57. False; x = –1.
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6. Graphing Square Root Functions
ALGEBRA 1 LESSON 11-6
58. a. about 213 cameras
b. month 4
59. a.
b. y = |x| + 5
60. Translate the graph of
y = x right 2 units and up 3 units.
61. a. i.  ii. 
iii.  iv. 
b. The greater the absolute value of n,
the steeper the graph. If n < 0, then the
graph lies in Quadrant II. If
n > 0, the graph lies in Quadrant I.
11-6

7. Graphing Square Root Functions
ALGEBRA 1 LESSON 11-6
62. Check students’ work.
63. B
64. H
65. C
66. H
67. B
68. H
69. [2] x y
6 0
7 1
8 1.4
9 1.7
10 2
[1] incorrect coordinates on graph
70. 16
71. 7
74. no solution
75.
76. ,
77. 4 – ,
78. no solution
79. , 2 3
–2 – 2 – 2
–1 – 3 – 3
11-6

8. Graphing Square Root Functions
ALGEBRA 1 LESSON 11-6
80. no solution
81. ,
82. (2x + 1)(x – 4)
83. (3x – 5)(x + 2)
84. (2x + 1)(2x + 9)
85. 2(x – 8)(x + 3)
86. 4(x2 – x – 15)
87. x(x – 13)(x + 1)
–13 – 18 – 18
11-6