1.
An equation whose graph is a straight line is called a(n)________.
A.
ordered equation
B.
relation
C.
standard equation
D.
linear equation
Hint
2.
Which graph represents the equation
y
= -
x
+ 4?
A.
B.
C.
D.
Hint
3.
Which description
does not
fit the graph of
x
= -4?
A.
The line passes through the point at (0, 0).
B.
The value of the
x
-coordinate is always -4.
C.
The graph is parallel to the
y
-axis.
D.
The graph is a vertical line.
Hint
4.
Which equation is
not
a linear equation?
A.
y
= -4
B.
xy
+ 2 =
y
C.
x
= 0
D.
3
x
= 4
y
+
x
Hint
5.
Which is true of the equation
y
=
cx
where c is a constant?
A.
The graph will be increasing.
B.
The graph will always cross the
x
-axis at exactly one point.
C.
The graph will be decreasing.
D.
The graph passes through the origin.
Hint