Name
Chapter 28, Lesson 4
Reteach
Date
Equations of Horizontal
and Vertical Lines
CA Standards
AF 1.5,
AF 1.4
Graph linear equations with one variable.
Graph the line y = 6.
Step 1
Step 2
Make a function table. Choose 2 values
for x. You already know the y-value is 6.
Plot the points in the coordinate plane. Draw
a line that passes through the points.
y
HINT: Since the
equation above
has no x, for any
value you use for
x, the value of y
will always be 6.
HINT: Lines
of equations
with one y
variable will be
horizontal. Lines
of equations with
one x variable
will be vertical.
8
y=6
x
0
2
6
4
y
6
6
2
_
8
_
6
_
4
_
2 0
_
2
2
4
6
8
x
_4
_6
_8
Graph the line with the given equation.
1.
y=2
x = -4
2.
3.
y=8
4.
x=3
Write the equation of the line.
y
5.
y
6.
8
8
6
6
4
4
2
2
_8
_6
_4
_2 0
_2
2
4
6
8
x
_4
_6
_8
_6
_4
_2 0
_2
2
4
6
8
x
_4
_6
_8
_8
Writing Math What is the difference between the graph in problem 6
and a graph of x = -4. Explain.
Reteach
Use with text pages 614–615.
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