Parallel and Perpendicular Lines -SAF
Parallel lines: two lines that never intersect.
They have the same slopes, but different y int.
Perpendicular Lines: Two lines that meet at 90angles.
Their slopes have a product of -1.
Perpendicular Lines:   two lines that meet at 90angles.
Their slopes have a product of                    .
Parallel lines: two lines that never intersect.
They have the                  slopes, but different y int.
Write an equation of the line that is perpendicular to
y = 3x+ 6 and goes through the point ( 2, 10).
General equation:
Nota: Escriba la ecuación sin dejar espacios
y =
x
+
Write an equation of the line that is parallel to
y = 3x+ 6 and goes through the point ( 2, 10).
Nota: Escriba la ecuación sin dejar espacios
Write an equation of the line that is parallel to
y = 5x+ 6 and goes through the point ( -1, 6),
 in slope intercept form.
Combine like terms to get:
y =
x +
Write an equation of the line that is perpendicular to
y = 1/5 x+ 6 and goes through the point ( -1, 10),
 in slope intercept form.
Fill in the m and b.
y =
x +
Write an equation of the line that is perpendicular to
y = -1/3 x+ 2 and goes through the point ( -12, 5),
 in slope intercept form.
Fill in the m and b:
y =
x +
Write an equation of the line that is parallel to
y = 2 x- 8 and goes through the point ( -3, -6),
 in slope intercept form.
Fill in the m and b:
y =
x -
Write an equation of the line that is parallel to
y = 2 x- 8 and goes through the point ( -3, -6),
 in standard form.
Fill in the A, B and C:
X +       Y =
Write an equation of the line that is perpendicular to
y = 4 x+ 7 and goes through the point ( 8, 2),
 in slope intercept form.
Fill in the m and b:
y =
x +
Write yhe general equation of the line that is perpendicular to
y = 4 x+ 7 and goes through the point ( 8, 2).
Fill in the A, B and C:
X +       Y - 
= 0
Write an equation of the line that is parallel to
y = -2/3 x+ 6 and goes through the point ( -3, 6),
 in slope intercept form.
y =
Fill in the m and b:
x +
Write the general equation of the line that is parallel to
y = -2/3 x+ 6 and goes through the point ( -3, 6).
Fill in the A, B and C:
X +       Y - 
= 0
Write an equation of the line that is perpendicular to
y = 3/2 x -10 and goes through the point ( 0, 8),
 in slope intercept form.
Fill in the m and b:
y =
x +
Write the general equation of the line that is perpendicular to
y = 3/2 x -10 and goes through the point ( 0, 8).
Fill in the A, B and C:
X +       Y =
HOY stands for...
H: horizontal lines
O: zero-slope
Y: y = # (how to write the equation of a horizontal line)

VUX stands for...
V: vertical lines
U: undefined slope
X: x = # (how to write the equation of a vertical line)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Which acronym best describes the graphs of the 
following lines?
      
y = -4
y = 2
y = 4
HOY
VUX
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Which acronym best describes the graphs of the
lines below?
x = -8
x = -2
x = 5
HOY
VUX
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10

Write the equation

of the line.

y=
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
What is the equation of
the line?
x = -4
x = 4
y = -4
y = 4
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10

Write the equation

of the line.

y=
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
What is the equation of
the line?
x = -4
x = 4
y = -4
y = 4
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