1.
Use elimination to solve the system of equations given below.
x
+ 3
y
= 6
2
x
- 6
y
= 8
A.
B.
C.
D.
Hint
2.
Use elimination to solve the system of equations given below.
3
x
+ 4
y
= -12
x
-
y
= 10
A.
(52, 42)
B.
(-4, -14)
C.
(4, -6)
D.
(28, 18)
Hint
3.
Use elimination to solve the system of equations given by 8
x
– 4
y
= -20 and 10
x
– 5
y
= 35.
A.
(0, 0)
B.
(-12, -12)
C.
no solution
D.
infinitely many solutions
Hint
4.
Use elimination to solve the system of equations given by 3
x
+ 4
y
= 5 and 21
x
+ 28
y
= 35.
A.
infinitely many solutions
B.
C.
no solution
D.
Hint
5.
A boat travels 30 miles upstream in 4 hours. The trip downstream takes 2.5 hours. Find the rate of the boat in still water.
A.
6.92 mph
B.
9.23 mph
C.
9.75 mph
D.
2.25 mph
Hint