1.
State the number of solutions to the system of equations graphed below.
A.
1
B.
2
C.
0
D.
infinitely many
Hint
2.
When two lines have different slopes, the graphs of the equations are _________
A.
parallel lines.
B.
the same line.
C.
intersecting lines.
D.
horizontal lines.
Hint
3.
Solve the system of equations by graphing.
A.
(2, -6)
B.
(6, 2)
C.
(2, 6)
D.
(-6, 2)
Hint
4.
The Waxmans just opened a carpet store. Their startup costs were $5000, and their cost of carpet is $8 per square yard. How many square yards of carpet do they need to sell in order to break even if they sell the carpet for $18 per square yard?
A.
50 square yards
B.
500 square yards
C.
192 square yards
D.
278 square yards
Hint
5.
Which of the following systems of equations is not consistent and independent?
A.
7
y
+
x
= 9 3
y
+ 9
x
= 4
B.
2
y
+ 4
x
= 3 7
y
+ 5
x
= 18
C.
–
y
– 5
x
= 1 4
y
+ 3
x
= 8
D.
y
+ 4
x
= 10 6
y
+ 24
x
= 60
Hint