This document contains notes from a math lesson. It includes: 1) An assignment list for the class due on specific dates. 2) Warm up problems writing equations in different forms. 3) Information about parallel and perpendicular lines and how to identify them based on slope. 4) Examples of writing equations for lines parallel and perpendicular to given equations passing through specific points. 5) Problems determining if equation pairs represent parallel, perpendicular, or neither relationships.

1. Lesson 4­4.notebook
Assignment:
1­­>L4.4, pg. 240­241, #2­36 (evens) ­ Due Tomorrow (10/15)
2­­>Checkpoint 4.3­4.4 ­ Due Thursday (10/16)
3­­>Chapter 4 Test ­ Friday (10/18)
4­­>Test signed??
October 15, 2013

2. Lesson 4­4.notebook
Lesson 4.4 WarmUp:
Write an equation in point­slope form for the line that
passes through each point with the given slope.
1) (5, 3), m = 7
Write each equation in standard form.
2) y ­ 10 = 2(x ­ 8)
3)
2y + 3 = ­1/3(x ­ 2)
Write each equation in slope­intercept form.
4) y ­ 11 = 3(x + 4)
5)
y + 4 = 3(3x + 3)
October 15, 2013

3. Lesson 4­4.notebook
October 15, 2013
Lesson 4.4:
*parallel lines ­ lines in the same plane that never intersect
...and have the same slope
*perpendicular lines ­ lines in the same plane that intersect at right angles
...and have slopes that are "opposite reciprocals"
ie ­­>
3/4 and ­4/3
...and the product of their slopes = ­1

4. Lesson 4­4.notebook
October 15, 2013
Lesson 4.4 examples:
Write an equation in slope­intercept form for the line that passes through the given
point and is PARALLEL to the graph of the given equation.
A) (­1, 2), y = 1/2x ­ 3
B)
(3, ­2), y = x + 4

5. Lesson 4­4.notebook
Write an equation in slope­intercept form for the line that passes through the
given point and is PERPENDICULAR to the graph of the given equation.
C) (­1, 4), y = 3x + 5
D)
(­3, ­2), y = ­2x + 4
October 15, 2013

6. Lesson 4­4.notebook
Determine whether the graphs of the following equations are parallel,
perpendicular, or neither.
E) y = ­2x ­and­ 2x + y = 3
F)
3x + 5y = 10 ­and­ 5x ­ 3y = ­6
October 15, 2013