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Geometry Date: 10/17/2011 Obj : SWBAT find slopes of lines & use

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 Bell Ringer Go over HW from break Distribute graph paper

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Geometry Date: 10/17/2011 Obj : SWBAT find slopes of lines & use

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  1. 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 • Bell Ringer Go over HW from break Distribute graph paper • Homework Requests on Board - Worksheet Skills Practice Section 3.2 and Worksheets SGI 3.3 (Slope) and pg 137 #32-39 • 3. HW: Pg142 #16-38 evens 1st Period Adjust pg 142 #2-12 • Announcements: • -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.

  2. 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 • Bell Ringer Mini Quiz 3.1-3.2 • 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.

  3. 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 =

  4. 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. • 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 (2-120 • 3. HW: Pg 142 #42, 43 pg148 #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

  5. 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. • Bell Ringer: Check Worksheet 3.3; GO over Mini Quiz. • 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 10/21 • -10 Week Exam Wed. 10/26

  6. 3 ways to write equations of lines. • a. Review slope intercept form. • 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)? • What is point slope form and how is it related to slope intercept form? • How do we write an equation given the slope and a point? • 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).

  7. 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 + 1 • 2 • f. How do we graph lines generated • from the conditions above?

  8. 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. • Bell Ringer: Go over Chapter 2 Test • Homework Requests:pg 143 #42, 43; pg148 #36-44 evens 45-49, graph #21-23 • 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--16 • HW adjust: Practice Quiz pg 150 • Read Section 3.5 pg 154 #4-12 • Announcements: • -Make up 2 missing assignments due • Friday 10/21 • -10 Week Exam Wed. 10/26

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