1.
Which is not a method for solving a system of equations?
A.
elimination
B.
graphing
C.
solving for y
D.
substitution
Hint
2.
Solve the system 3
x
+
y
= 11 and
x
– 2
y
= –1.
A.
(2, 3)
B.
(4, 1)
C.
D.
(3, 2)
Hint
3.
A boat traveling on the Snake River travels 24 miles upstream in 3 hours. The return trip takes the boat only 2 hours. Find the rate of the boat in still water.
A.
12 mph
B.
2 mph
C.
10 mph
D.
8 mph
Hint
4.
Use elimination to solve 3
x
+ 2
y
= 9 and 5
x
+ 6
y
= 15.
A.
(0, 3)
B.
(0, -3)
C.
(-3, 0)
D.
(3, 0)
Hint
5.
Mike is paddling a sailboat at the same speed upstream and downstream. If it takes Mike 15 minutes to paddle a quarter of a mile upstream to his favorite reading spot and 5 minutes to paddle back home. How fast does Mike paddle?
A.
1 mph
B.
1.5 mph
C.
3 mph
D.
2 mph
Hint