1.
When two lines have different slopes, the graphs of the equations are _________
A.
the same line.
B.
intersecting lines.
C.
horizontal lines.
D.
parallel lines.
Hint
2.
Solve the system of equations by graphing.
A.
infinitely many solutions
B.
no solution
C.
(-1, 7)
D.
(0, 3)
Hint
3.
The system of equations on the graph shown is
A.
consistent and dependent.
B.
consistent and independent.
C.
inconsistent.
D.
consistent.
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.
278 square yards
B.
50 square yards
C.
500 square yards
D.
192 square yards
Hint
5.
Which of the following systems of equations is not consistent and independent?
A.
–
y
– 5
x
= 1 4
y
+ 3
x
= 8
B.
2
y
+ 4
x
= 3 7
y
+ 5
x
= 18
C.
y
+ 4
x
= 10 6
y
+ 24
x
= 60
D.
7
y
+
x
= 9 3
y
+ 9
x
= 4
Hint