Chapter 4 Test Form C Worksheet - Tussy & Gustafson, Elementaryalgebra Page 4
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8Tussy/Gustafson, ElementaryAlgebra, 4/e
Chapter 4 Test Form C
11.
In solving a system of equations using the substitution method, suppose you obtain the
result of 3 = 4. What term is used to describe the system?
a. dependent system
b. none of these
c. consistent system
d. inconsistent system
12.
Which variable in which equation would be the best to solve for in step 1 of the
substitution method to make the easiest work in solving the following system?
R S
−
=
5
x
6
y
2
T
− =
2
x y
4
a. Solve for y in the first equation.
b. Solve for x in the first equation.
c. Solve for y in the second equation.
d. Solve for x in the second equation.
13.
Which of the following systems is written in the correct form for using the elimination
(addition) method?
R S
−
=
3
x
5
y
8
a.
T
+
=
6
y
2
x
9
R S
− =
3
x
8 5
y
b.
T
+
=
2
x
6
y
9
R S
−
=
3
x
5
y
8
c.
T
+
=
2
x
6
y
9
R S
−
=
3
x
5
y
8
d.
T
− = −
2
x
9
6
y
Page 4
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