1.
Which system of equations is graphed below?
A.
B.
C.
D.
Hint
2.
Graph the system of equations to determine whether it has no solution, infinitely many solutions, or one solution. If the system has one solution, name it.
2
x
-
y
= 4
x
+ 2
y
= 2
A.
no solution
B.
one solution at (2, 0)
C.
one solution at (0, 2)
D.
infinitely many solutions
Hint
3.
Solve the system of equations given by
y
= 2
x
+ 2 and
.
A.
infinitely many solutions
B.
no solution
C.
(-3, -4)
D.
(4, -6)
Hint
4.
Solve the system of equations given by 5
x
– 2
y
= -6 and 15
x
– 6
y
= 6.
A.
(-2, -2)
B.
infinitely many solutions
C.
(1, 1)
D.
no solution
Hint
5.
A long distance phone company has a monthly fee of $7.95 and charges a rate of $0.05 per minute. Another long distance company has a monthly fee of $9.95 and charges a rate of $0.03 per minute. At how many minutes would the two companies have equal charges?
A.
100 minutes
B.
150 minutes
C.
50 minutes
D.
They will never have the same charges.
Hint