Find three different ordered pairs that are solutions of the equation. Graph the equation.

P 224 #5) y=2x-6X Y

0 2(0)-6=-6

3 2(3)-6=0

1 2(1)-6=-4

1. Find the slope of the line passing through (-3,0) and (-1,6)

Given (x1,y1) and (x2,y2), find slope using m = y2-y1

x2-x1

Given (x1,y1) and (x2,y2), find slope using m = y2-y1

x2-x1

Given (x1,y1) and (x2,y2), find slope using m = y2-y1

x2-x1

Given (x1,y1) and (x2,y2), find slope using m = y2-y1

x2-x1

4.5 Direct variationReview for Friday quiz 4.1-4.5Two variables vary directly if k not = 0 and

y=kxThink direct variation (y=kx) indirection variation (y=k/x)k=constant of variation, also the slope

Given (x1,y1) and (x2,y2), find slope using m = y2-y1

x2-x1

Key concepts from 4.4

4.5 Direct variationTwo variables vary directly if k not = 0 and

y=kxThink direct variation (y=kx) indirection variation (y=k/x)k=constant of variation, also the slope

4.6 Graphing Using Slope Intercept Form

4.8 Functions and RelationsRelation: any set of ordered pairsFunction: for every input, there is exactly one

output

http://www.classzone.com/books/algebra_1/

Ch 5 Writing Linear Equations

5.1 Writing Linear Equations: slope-intercept form

5.2 Writing Linear Equations given slope and a point

5.3 Writing Linear Equations given two points5.4 Fitting a Line to Data5.5 Point-Slope Form of a Linear Equation5.6 The Standard Form of a Linear Equation5.7 Predicting with Linear Models

5.1 Writing Linear Equations in Slope-intercept form

Write an equation given the slope and y-intercept

m=2 b = -5 y=mx+b y=2x – 5

2. Write and equation of the line from a graph:

m = y2-y1 (-2,0) (0,-1)

x2-x1

m = -1 – 0 = -1 m= -½ 0 – -2 2

y=mx + b y = (-1/2)x + b0 = (-1/2)(-2) + b0 = 1 + bb= -1y=(-1/2)x -1

5.2 Writing Linear Equations given the slope and a point

Write an equation of the line that passes through point (-3,0) and has a slope of 1/3.

y = mx + b

y= (1/3) x +b

0 = (1/3) (-3) +b

0 = -1 + b

b = 1

y = (1/3)x +1

Write the equation of parallel lines

Write the equation of the line that passes through (3,-4) and is parallel to the line y= -3x-2

M T W Th FOct 24 Oct 25

5.1 and 5.2Oct 265.3

Oct 27 5.4

Oct 28No school

Oct 315.5

Nov 15.6

25.6

35.7

45.7

7review

8 Ch 5 Test

9 10 11

Date Assigned (due next day)

Assignment

Tuesday 10/25 5.1 p276 #12,18,22,24,28-29,30-32,47,485.2 p282 #12,22,24,30,34,42,43,48,49

Wednesday 10/26 5.3 p288 #20,28, 40,45,46,51,52,66,74Thursday 10/27 5.4 p296 #10,14,18,20,22,28-30Monday 10/31 5.5 p303 #18,26,34,40,48,74,80,87; Tuesday 11/1 5.6 p311 #18,32,34,44,50,52Wednesday 11/2 Continue 5.6Thursday 11/3 5.7 p318 #11-27Friday 11/4 p326 #2-24Monday 11/7 ReviewTuesday 11/8 Test

Wednesday Oct 26To review yesterday, do #1,4,11

5.1 Writing Linear Equations: slope-intercept form5.2 Writing Linear Equations given slope and a point5.3 Writing Linear Equations given two points

Homework 5.3 p288

#20

Homework 5.3 p288 #20,28

Homework 5.3 p288

#40

Homework 5.3 p288 #51,52

http://www.youtube.com/watch?v=sf7n_pOzFY4&feature=fvsr

Homework 5.3 p288 #66,74

5.4 Fitting a line to Data Shoe Size

Height(inches)

Approximating a best-fitting line1. Plot the points2. Draw a line that best approximates the data3. Locate two points on the line, determine x

and y coordinates.4. Use the two points to find the slope and

y-intercept5. Write the equation of the line

5.4 p296 #10,14,18,20,22,28-30

Please turn in the following homework assignments:

5.1 p276 #12,18,22,24,28-29,30-32,47,485.2 p282 #12,22,24,30,34,42,43,48,495.3 p288 #20,28, 40,45,46,51,52,66,74

Option #3 40option #1 Option #2

October 31

Review 5.1-5.4

New 5.5 Point-slope form of a linear equation

Quiz 5.1-5.5 on Wednesday

Ch 5 Writing Linear Equations

5.1 Writing Linear Equations: slope-intercept form

5.2 Writing Linear Equations given slope and a point

5.3 Writing Linear Equations given two points5.4 Fitting a Line to Data5.5 Point-Slope Form of a Linear Equation5.6 The Standard Form of a Linear Equation5.7 Predicting with Linear Models

5.1 Write an equation given the slope and y-intercept m=2 b = -5 y=mx+b y=2x – 5

5.2 Writing Linear Equations given the slope and a pointWrite an equation of the line that passes through point (-3,0) and has a slope of 1/3.y = mx + by= (1/3) x +b0 = (1/3) (-3) +b0 = -1 + bb = 1y = (1/3)x +1

5.4 Approximating a best-fitting linePlot the pointsDraw a line that best approximates the dataLocate two points on the line, determine x and

y coordinates.Use the two points to find the slope and y-

interceptWrite the equation of the line

5.5 Point-slope form of a linear equation

We know:

Homework 5.5 p303 #18,26,34,40,48,74,80,87

Homework 5.5 p303 #18,26,34,40,48,74,80,87

Homework 5.5 p303 #18,26,34,40,48,74,80,87

Homework 5.5 p303 #18,26,34,40,48,74,80,87

Homework 5.5 p303 #18,26,34,40,48,74,80,87

Homework 5.5 p303 #18,26,34,40,48,74,80,87

Homework 5.5 p303 #18,26,34,40,48,74,80,87

Homework 5.5 p303 #18,26,34,40,48,74,80,87

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