Chapter 4 Test Form C Worksheet - Tussy & Gustafson, Elementaryalgebra Page 5
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8Tussy/Gustafson, ElementaryAlgebra, 4/e
Chapter 4 Test Form C
R S
− =
2
x y
6
14.
The method of elimination (addition) will be used to solve the system
.
T
−
=
4
x
3
y
2
Which of the following equations is equivalent to equation 1 and can be used with
equation 2 to eliminate y by addition?
a. −
+
=
6
x
3
y
6
b. 6x + 3y = 18
c. 6x + 3y = 6
d. −
+
= −
6
x
3
y
18
In problems 15 - 18, solve the systems by substitution or elimination (addition).
R S
−
=
x
4
y
1
15.
Find the y-coordinate of the solution of the system
.
T
+
=
5
x
4
y
17
a. y = 2
1
b. y =
2
1
c. y = −
2
d. y = 3
R S
+ =
2
x y
1
16.
Find the x-coordinate of the solution of the system
.
T
−
=
5
x
3
y
19
a. x = 2
20
b. x =
11
c. x = −2
d. x = −3
R S
−
=
2
x
5
y
26
17.
Find the y-coordinate of the solution of the system
.
T
−
=
5
x
3
y
27
53
a. y =
19
b. y = 3
c. y = −4
d. y = 4
Page 5
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