Match the description with the corresponding graph.
22.) You are $4 in debt. Then you
get a babysitting job and make money
at a rate of $2 per hour.
a.
)
___C_____
23.) The woman was 10 pounds overweight.
Then she went on a diet and lost weight ____D____
At a rate of 4 pounds per week.
b.
)
24.) In your garden, your sunflowers are 10
inches tall, and they grow at a rate of 4
_____A___
inches per week.
25.) On a cold winter morning, the temperature
is 4°. Throughout the day, the temperature
drops at a rate of 2° per hour.
c.
)
___B_____
d.
)
26.) Label the following as having a positive slope, negative slope, undefined slope, or zero slope.
a.) y 
3
x6
2
b.) x  5
Positive
Undefined
e.) y  6 
3
x
2
Negative
f.) y  6
c.) y  6 
positive
g.) y  6
zero
zero
i.)
3
x
2
d.) y  
3
x6
2
negative
h.) x  5
undifined
j.)
zero
k.)
underfined
l.)
negative
positive
Simplify
Give the equation of the line that has the following
 
27. 5k
3 2
25k
3
 4c  c
28.   
8
d 
2
8c
d
6
49. slope = 2, goes through the point (3,1)
y = 2x – 5 or y – 1 = 2(x – 3)
5
50. slope of 5 and through the point (0, -6)
y = 5x – 6 or y + 6 = 5(x – 0)
Are these lines parallel?
Solve each proportion.
29.
24 4

7
c
c=
30.
3w
2

10 w  2 7
w=4
51. x - y = 2
7
6
y - x = -3
Solve the following systems.
52. y = -x + 9
y = 2x
Evaluate
31. 18 is 60% of what number? 30
32. What percent of 36 is 54
(3, 6)
53. r - s = -3
r+s=9
150%
(3, 6)
54. 12m + 3n = 51
Simplify.
33. 6 2
55. 2w - 3z = -1
-1
4
3
3 3
3w + 4z = 24
1
3
 
36. 6
7m - 3n = 44 (5, -3)
1
36
34.  157
35.
no, slopes not =
2 1
True or False
56. -8 > 7 > 6
36
37. 2 4  2 3
57.
1
128
38. 5 y 2
5
y2
39. d 4 e 2 f
2
(4, 3)
1
2
 0 1
58.  0.6  0.4
false/ falso / falsch
true / richtig/ cierto
false
Solve and Graph
e2
d4 f 2
Write in scientific notation.
59. e - 8 > 12
60.
m
 5  2
3
e > 20
m>9
40.
64,800,000 6.48 x 10 7
61. 5m  2  4m  1
41.
0.00000034 3.5 x 10 7
62.  3  n  5  7
63. u  2  5 or u  2  4 u < -3 or u  6
Write in standard form.
-4
42. 4.5 x 10
6
43. 3.07 x 10
-8 < n <2
0.00045
64. v  6  3 v = 9, 3
3,070,000
Find the slope of a line through the two given points
44. (1,2), (4,6)
4
3
45. (-7, 1), (-1, 2)
1
5
46. (-1, 6), (0, 0)
-6
State the slope and the y-intercept
65. y  5  2
y > -3 or y < -7
66. 7  6n  19
n < 2 and n >
13
3
Graph.
67. y   x  2
see graph below
68. y > -3x + 2
see graph below
Solve the system of inequalities by graphing
47. y = 7x + 3
m=7 b=3
69. y  5 x  4
48. y - 9 = 0
m=0 b=9
y  2x  1
see graph below
Solid line
67.
dotted line
68.
Solution area
Both solid lines
67.