Geometry Date: 10/17/2011 Obj: SWBAT find slopes of lines & use the slope to identify and graph || & and perpendicular lines. Projects Due: 10/19 WednesdayParking Lot pg. 104 #20, 21, 22, 23

1. Bell Ringer Go over HW from break Distribute graph paper2. Homework Requests on Board - Worksheet Skills Practice Section

3.2 and Worksheets SGI 3.3 (Slope) and pg 137 #32-393. HW: Pg142 #16-38 evens 1st Period Adjust pg 142 #2-12Announcements:

-Chapter 2 Test Makeup Today!-Quiz 3.1-3.2 Tuesday. -10 Week Exam Wed. 10/26-Make up 2 missing assignments due Friday 10/21-Mon. Tutoring Harton/No calculator sharing

Wildland Fire Management and Planning The steeper the slope the faster the rate of spread.

Geometry Date: 10/18/2011 Obj: SWBAT find slopes of lines & use the slope to identify and graph || & and perpendicular lines. Projects Due: 10/19 WednesdayParking Lot pg. 104 #20, 21, 22, 23

1. Bell Ringer Mini Quiz 3.1-3.22. Homework Requests on Board - Worksheets SGI 3.3 (Slope) and pg

137 #32-39 Complete HW Requests on Wed.3. HW: Pg142 #16-38 evens Announcements:

-Chapter 2 Test Makeup Today!-10 Week Exam Wed. 10/26-Make up 2 missing assignments due Friday 10/21-Mon. Tutoring Harton/No calculator sharing

Wildland Fire Management and Planning The steeper the slope the faster the rate of spread.

What is the slope?

How do we find the slope of a line from the graph?

How do we use the slope to determine if lines are parallel or perpendicular?

Parallel lines have the same slopePerpendicular lines – the slope is the opposite reciprocal

How do we graph lines using slope and points?

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m = = rate of change = time in Change

quantity in Change

10/19/11 Section 3.4 Equations of LinesSWBAT graph a line given information about its slope and will be able to write an equation of a line given graph information.

1. Bell Ringer Graph line m that goes through the points (-2, -3) & (1,4). What isthe slope of line m? Graph the line that isperpendicular to line m and goes throughpoint (1, -3).

2. Homework Requests on Board HW: Pg142 #16-38 evens (2-120

3. HW: Pg 142 #42, 43 pg 148 #16-34 evens

Announcements: -Quiz Friday 3.3, 3.4-Make up 2 missing assignments due Friday 10/21-10 Week Exam Wed. 10/26

10/20/11 Section 3.4 Equations of LinesSWBAT graph a line given information about its slope and will be able to write an equation of a line given graph information.

1. Bell Ringer: Check Worksheet 3.3; GO over Mini Quiz.2. Homework Requests: Pg 142 #42, 43 pg 148 #16-34 evens

3. In Class: Get into groups of 4, Complete worksheet.For probs. 5-8 after finding the equation graph the equation and theLine parallel for probs. 5, 7; the line perpendicular for #6,8

4. HW: pg 148 #36-44 evens 45-49, graph #21-23 Read Section 3.6 and take notes

Announcements: -Quiz Friday 3.3, 3.4-Make up 2 missing assignments due Friday 10/21-10 Week Exam Wed. 10/26

3 ways to write equations of lines.a. Review slope intercept form.1. Slope and y-intercept

Slope- intercept form: y = mx + b

Write an equation in slope-intercept form of the line with slope 8 and y intercept -2. What are the coordinates of the y –intercept (x, -2)?

b. What is point slope form and how is it related to slope intercept form?c. How do we write an equation given the slope and a point?2. Point and Slope

Point-slope form: y - y 1 = m (x- x 1)Write an equation in point-slope form of the line with slope 8 andcontains (8, 3).

d. How do we write an equation given two points?e. How do we write an equation given one point and an equation?

Slope- intercept form: y = mx + b Point -Slope form y - y 1 = m (x- x 1)

3. 2 points – write an equation in slope intercept form for a line

containing P( 4, 9) Q (-2,0)

4. Write an equation in slopeintercept form for a line containing(1,7) that is perpendicular to the line

y = -1x + 1 2f. How do we graph lines generated from the conditions above?

10/21/11 Section 3.4 Equations of LinesSWBAT graph a line given information about its slope and will be able to write an equation of a line given graph information.

1. Bell Ringer: Go over Chapter 2 Test2. Homework Requests: pg 143 #42, 43; pg 148 #36-44 evens 45-49,

graph #21-23 3. In Class:

- Introduce Section 3.5 - Complete work sheet 3.4 started yesterday. - Complete Practice Quiz pg 150

4. HW: Read Section 3.5 pg 154 #4--16HW adjust: Practice Quiz pg 150Read Section 3.5 pg 154 #4-12Announcements: -Make up 2 missing assignments due Friday 10/21-10 Week Exam Wed. 10/26