1. Objective - To write equations of parallel and perpendicular lines.
Graph the following on the coordinate plane. y x
Parallel lines have the same slope.

2. Write the equation of the line in slope-intercept form
that is parallel to y = -2x - 9 and contains (4, -3).

3. Find the equation of a line in standard form that
is parallel to 3x - 5y = 10 and contains (-2,6).
(-2,6)
3x - 5y = 10
-3x x
-5y = -3x + 10 or

4. Perpendicular lines have slopes that are
Graph the following on the coordinate plane. y x
Lines appear
perpendicular
Perpendicular lines have slopes that are
opposite reciprocals

5. Find the following:
Opposite
Reciprocal
Number
Opposite
Reciprocal 3
0.2 -8

6. Find the equation of a line in standard form that
is perpendicular to 4y - x = 6 and contains (2,5).
4y - x = 6
(2,5)
+x +x
4y = x + 6

7. Determine whether the slopes are perpendicular.1)
Yes, perpendicular. 2)
No, not perpendicular. 3)
Yes, perpendicular.

8. Find the equation of a line in standard form that is
perpendicular to 3x + 5y = 7 and contains (-4,-8).
(-4,-8)
3x + 5y = 7
-3x x
5y = -3x + 7 or