1.
If you use the substitution method to solve the system of equations
3
x
- 2
y
= 4 and
x
+
y
= 5, which of the following would be the best method?
Method I: Solve the second equation for
x
, and substitute 5 -
y
for
x
into the first equation.
Method II: Solve the second equation for
y
, and substitute 5 -
x
for
y
into the first equation.
A.
Method II
B.
Both Method I and Method II are correct.
C.
Method I
D.
Neither Method I nor Method II is correct.
Hint
2.
Solve the system of equations
x
= 4 and 3
x
- 4
y
= 12 by graphing.
A.
B.
C.
D.
Hint
3.
Which of the following describes the system of equations
x
- 3
y
+ 2 = 0 and
2
x
- 6
y
+ 4 = 0?
A.
Consistent and independent
B.
Consistent and dependent
C.
none of these
D.
Inconsistent
Hint
4.
Choose the best method to solve the system of equations 4
x
+
y
= 6
and 2
x
-
y
= 10.
A.
Graphing
B.
Substitution
C.
Eliminate
x
D.
Eliminate
y
Hint
5.
Choose the best method to solve the system of equations
x
+
y
= 2
and
y
= 3
x
- 4.
A.
Eliminate
x
B.
Eliminate
y
C.
Graphing
D.
Substitution
Hint