1.
If the product of the slopes of two lines is –1, then the lines are _______.
A.
horizontal
B.
parallel
C.
vertical
D.
perpendicular
Hint
2.
The graphs of the two equations
y
= 3 and
x
= –1 are________.
A.
the same line
B.
parallel
C.
neither parallel nor perpendicular
D.
perpendicular
Hint
3.
Which two equations have graphs that are parallel?
A.
y
= 3
x
– 1
-3 –
y
=
(
x
+ 2)
B.
y
=
x
+ 2
-3 –
y
=
(
x
+ 2)
C.
y
=
x
+ 2
4
y
= 12
x
+ 13
D.
y
= 3
x
– 1
4
y
= 12
x
+ 13
Hint
4.
Which equation is parallel to the graph of
y
= 2
x
+
and passes through the point (4, 7)?
A.
y
=
x
+
B.
y
= -
x
+
C.
y
= 2
x
– 1
D.
y
= 2
x
+ 3
Hint
5.
Which line is perpendicular to
y
= -4
x
+ 2 and passes through the point (4, 3)?
A.
y
=
x
–
B.
y
=
x
+
C.
y
= -
x
+ 4
D.
y
=
x
+ 2
Hint