45)
y =
1
8x +
3
8
A)
B)
C)
D)
46)
y =-6x
A)
B)
C)
D)
47)
2x – y = 0
A)
B)
C)
D)
48)
6x + y = 0
A)
B)
C)
D)
Find the coordinates of the y–intercept for the given equation.
49)
y = x +7
A)
(7, 0)
B)
(0, 1)
C)
D)
(0, 7)
50)
y = x –9
A)
(–9, 0)
B)
(0, –9)
C)
D)
(0, 9)
51)
y =10x
A)
1, 10
B)
10, 0
C)
D)
0, 10
52)
y =
5
2x +8
A)
0, 5
2
B)
(8, 0)
C)
D)
5
2, 8
53)
y =9x –5
A)
(0, 5)
B)
(0, –5)
C)
D)
(9, –5)
54)
x + y =-9
A)
(9, 0)
B)
(0, 9)
C)
D)
(0, –1)
55)
x +2y =1
A)
(2, 2)
B)
(0, 2)
C)
D)
(2, 0)
56)
6x –5y =-5
A)
(0, -1)
B)
(0, -5)
C)
D)
(6, 5)
57)
5y +8x =-7
A)
(0, -7)
B)
(-7, 0)
C)
D)
0, – 7
5
58)
y =
2
3x –1
A)
1, 0
B)
(-1, 0)
C)
D)
(0, -1)
Solve the problem.
59)
The value V, in dollars, of a shopkeeper’s inventory software program is given by V = – 30t +450, where t is the
number of years since the shopkeeper first bought the program. Find the value of the software after 0 years,
6 years, and 8 years.
A)
$420, $270, and $210
B)
$450, $270, and $210
C)
$450, $270, and $250
D)
$450, $630, and $210
25
60)
The value V, in dollars, of a shopkeeper’s inventory software program is given by V = – 30t +700, where t is the
number of years since the shopkeeper first bought the program. Graph the equation and then use the graph to
estimate the value of the software after 3 years.
A)
$600
B)
$700
C)
$620
D)
$610
61)
The value V, in dollars, of a shopkeeper’s inventory software program is given by V = – 30t +250, where t is the
number of years since the shopkeeper first bought the program. After how many years is the value of the
software $190?
A)
1 yr
B)
2 yr
C)
D)
4 yr
26
Find the coordinates of the y–intercept and the coordinates of the x–intercept.
62)
A)
(0, 5), (-2, 0)
B)
(0, -2), (5, 0)
C)
D)
(5, -2), (0, 0)
63)
A)
(0, 0), (–1, -5)
B)
(-5, –1), (0, 0)
C)
D)
(0, –1), (-5, 0)
64)
A)
(-6, 3), (0, 0)
B)
(0, 0), (3, -6)
C)
D)
(0, -6), (3, 0)
Find the coordinates of the y–intercept and the x–intercept, in that order.
65)
x + y =-8
A)
(-8, 0) (0, -8)
B)
(-3, 0) (-5, 0)
C)
D)
(0, -3) (0, -5)
66)
3x + y =3
A)
(3, 0) (-6, 0)
B)
(3, -6) (3, 3)
C)
D)
(0, 3) (0, -6)
67)
2x + y =-6
A)
(0, -6) (0, 6)
B)
(-6, 0) (6, 0)
C)
D)
(-3, 0) (0, -6)
68)
-2x + y =10
A)
(0, -8) (0, -6)
B)
(-8, 0) (-6, 0)
C)
D)
(-5, 0) (0, 10)
69)
-3x + 2y = – 6
A)
(0, -1) (0, -9)
B)
(2, -9) (-1, –6)
C)
D)
(-1, 0) (-9, 0)
70)
-2x – 5y =10
A)
(-9, 0) (-8, 0)
B)
(-5, -8) (-9, 10)
C)
D)
(0, -2) (-5, 0)
71)
7x –3y =4
A)
4
7, 0 , 0, – 4
3
B)
–3, 0 , 0, 7
C)
D)
– 4
3, 0 , 0, 4
7
72)
7y –5=4x
A)
-9, 0 , 0, -2
B)
5
4, 0 , 0, – 5
7
C)
D)
– 5
4, 0 , 0, 5
7
Find the x– and y–intercepts for the equation. Then graph the equation.
73)
x +2y =6
A)
6, 0 , 0, 3
B)
3, 0 , 0, 6
29
74)
5x –4= y
A)
4
5, 0 , 0, -4
B)
-4, 0 , 0, 4
5
75)
15y – 5x =-10
A)
0, –
2
3, 2, 0
B)
0, –
2
3, -2, 0
76)
–4x – 8y =24
A)
(0, -3), (6, 0)
B)
(0, -3), (-6, 0)
77)
6x – 12y =12
A)
(0, -1), (-2, 0)
B)
(0, -1), (2, 0)
78)
5x – 10y =0
A)
(0, 0), (0, 0)
B)
(0, 0), (0, 0)
Graph.
79)
y =1
34
A)
B)
C)
D)
80)
x =1
35
A)
B)
C)
D)
81)
y =
1
3
36
A)
B)
C)
D)
82)
x =– 5
3