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 Wednesday.

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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 Wednesday Parking Lot pg. 104 #20, 21, 22, 23 1.Bell Ringer Go over HW from break Distribute graph paper 2.Homework Requests on Board - Worksheet Skills Practice Section 3.2 and Worksheets SGI 3.3 (Slope) and pg 137 # HW: Pg142 #16-38 evens 1 st Period Adjust pg 142 #2-12 Announcements: - Chapter 2 Test Makeup Today! -Quiz 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 Wednesday Parking Lot pg. 104 #20, 21, 22, 23 1.Bell Ringer Mini Quiz 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 slope Perpendicular lines – the slope is the opposite reciprocal How do we graph lines using slope and points? ` m = = rate of change =

10/19/11 Section 3.4 Equations of Lines SWBAT 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 is the slope of line m? Graph the line that is perpendicular to line m and goes through point (1, -3). 2. Homework Requests on Board HW: Pg142 #16-38 evens ( 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/ Week Exam Wed. 10/26

10/20/11 Section 3.4 Equations of Lines SWBAT 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 the Line 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/ 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 and contains (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 slope intercept form for a line containing (1,7) that is perpendicular to the line y = -1x f. How do we graph lines generated from the conditions above?

10/21/11 Section 3.4 Equations of Lines SWBAT 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 Test 2.Homework Requests: pg 143 #42, 43; pg 148 #36-44 evens 45-49, graph # In Class: - Introduce Section Complete work sheet 3.4 started yesterday. - Complete Practice Quiz pg HW: Read Section 3.5 pg 154 #4--16 HW adjust: Practice Quiz pg 150 Read Section 3.5 pg 154 #4-12 Announcements: -Make up 2 missing assignments due Friday 10/ Week Exam Wed. 10/26