a s7.3 linear system by adding and subtracting.notebook · a s7.3 linear system by adding and...

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A S7.3 Linear System by Adding and Subtracting.notebook 1 February 24, 2017 Sep 75:46 AM Today's Lesson : Let us remember we are in the holy presence of God * Section 7.3 Solving Systems by Adding or Subtracting * Quiz Thursday Next week (sections 7.17.4) March 2nd Instructions : Person doing pray to the podium Assign #66 answers : 1 minute out of 3/4 4) (1, 1) 6) (13, 6) 8) (3, 22) 10) (8, 7) * We'll Grade Assign #66 after you copy the checklist. * Copy the following checklist into you notes (sect 7.3) 3 min Adding or Subtracting Checklist (pg 444 is similar) : Step 1: Add or Subtract in equations to eliminate one variable Step 2: Solve for remaining variable Step 3: Substitute into either original equation to find eliminated variable Note: you may have to rearrange the equations to line up the variables so you can add or subtract them. Sep 75:46 AM Homework Examples : Solve the linear system: 2x + y = 9 4x y =15 Step 1: Step 2: Step 3: Solution ( , ) (1,11) Section 7.3 Solve Systems by Adding or Subtracting I can solve systems of linear equations by Adding or Subtracting Step 1: Add or Subtract in equations to eliminate one variable Step 2: Solve for remaining variable Step 3: Substitute into either original equation to find eliminated variable Note: you may have to rearrange the equations to line up the variables so you can add or subtract them. 2x + y = 9 4x y =15 Sep 75:46 AM Homework Examples : Solve the linear system: 11x 7y = 14 11x 22y=44 Step 1: Step 2: Step 3: Solution ( , ) (0,2) Section 7.3 Solve Systems by Adding or Subtracting I can solve systems of linear equations by Adding or Subtracting Step 1: Add or Subtract in equations to eliminate one variable Step 2: Solve for remaining variable Step 3: Substitute into either original equation to find eliminated variable Note: you may have to rearrange the equations to line up the variables so you can add or subtract them. 11x 7y = 14 11x 22y=44 Sep 75:46 AM Homework Examples : Solve the linear system: 4x 3y = 2 x = 8 3y Step 1: Step 2: Step 3: Solution ( , ) (2,2) Section 7.3 Solve Systems by Adding or Subtracting I can solve systems of linear equations by Adding or Subtracting Step 1: Add or Subtract in equations to eliminate one variable Step 2: Solve for remaining variable Step 3: Substitute into either original equation to find eliminated variable Note: you may have to rearrange the equations to line up the variables so you can add or subtract them. Sep 75:46 AM Homework Examples : Solve the linear system: 2y = 5x + 4 5x 6y = 8 Step 1: Step 2: Step 3: Solution ( , ) (1, 1 / 2 ) Section 7.3 Solve Systems by Adding or Subtracting I can solve systems of linear equations by Adding or Subtracting Step 1: Add or Subtract in equations to eliminate one variable Step 2: Solve for remaining variable Step 3: Substitute into either original equation to find eliminated variable Note: you may have to rearrange the equations to line up the variables so you can add or subtract them. Sep 75:46 AM homework: due upon request (see syllabus) Assign Date Due # assigned date Description new semester and new chapter #55 1/12 1/__ Ch 6 Pink Outline #56 1/13 1/__ Sect 6.1, pg 359, #1, 2, 626 #57 1/18 1/__ Sect 6.2, pg 366 #326, 3033 #58 1/__ 1/__ Sect 6.3, pg 372, #325, 2932 #59 1/__ 1/__ Sect 6.4, pg 384, #326 #60 1/__ 1/__ Ch 4 graphing review #61 1/__ 1/__ Sect 6.7 Graph 2variable inequalities WS #62 2/__ 2/__ Sect 6.5, pg 393, # 326 #63 2/__ 2/__ Ch 6 Test Review WS (5pages...) New Chapter #64 2/16 2/21 Ch 7 Pink Outline #65 2/21 2/22 Sect 7.1 Solve by graphing WS #66 2/22 2/23 Sect 7.2 page 439, #311 #67 2/24 2/27 Sect 7.3 page 447, #322 Any Questions?

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A S7.3 Linear System by Adding and Subtracting.notebook

1

February 24, 2017

Sep 7­5:46 AM

Today's Lesson: Let us remember we are in the holy presence of God*  Section 7.3 Solving Systems by Adding or Subtracting* Quiz Thursday  Next week (sections 7.1­7.4) March 2ndInstructions: Person doing pray to the podium

Assign #66 answers:  1 minute out of      3/44)  (1, 1) 6)  (13, 6)

8)  (3, 22) 10)  (8, ­7)

* We'll Grade Assign #66 after you copy the checklist. * Copy the following checklist into you notes (sect 7.3) 3 minAdding or Subtracting Checklist (pg 444 is similar):  Step 1:  Add or Subtract in equations to eliminate one variableStep 2:  Solve for remaining variableStep 3:  Substitute into either original equation to find eliminated               variable

Note:  you may have to rearrange the equations to line up the variables so you can add or subtract them.  

Sep 7­5:46 AM

Homework Examples: Solve the linear system:2x + y =  94x ­  y =­15

Step 1:

Step 2:

Step 3:

Solution (     ,    )(­1,11)

Section 7.3 Solve Systems by Adding or Subtracting I can solve systems of linear equations by Adding or Subtracting

Step 1:  Add or Subtract in equations to eliminate one variableStep 2:  Solve for remaining variableStep 3:  Substitute into either original equation to find eliminated               variableNote:  you may have to rearrange the equations to line up the variables so you can add or subtract them.  

2x + y =  94x ­  y =­15

Sep 7­5:46 AM

Homework Examples: Solve the linear system:11x ­ 7y  = ­1411x ­ 22y=­44

Step 1:

Step 2:

Step 3:

Solution (     ,    )

(0,2)

Section 7.3 Solve Systems by Adding or Subtracting I can solve systems of linear equations by Adding or Subtracting

Step 1:  Add or Subtract in equations to eliminate one variableStep 2:  Solve for remaining variableStep 3:  Substitute into either original equation to find eliminated               variableNote:  you may have to rearrange the equations to line up the variables so you can add or subtract them.  

11x ­ 7y  = ­1411x ­ 22y=­44

Sep 7­5:46 AM

Homework Examples: Solve the linear system:4x ­ 3y = 2x = 8 ­ 3y

Step 1:

Step 2:

Step 3:

Solution (     ,    )

(2,2)

Section 7.3 Solve Systems by Adding or Subtracting I can solve systems of linear equations by Adding or Subtracting

Step 1:  Add or Subtract in equations to eliminate one variableStep 2:  Solve for remaining variableStep 3:  Substitute into either original equation to find eliminated               variableNote:  you may have to rearrange the equations to line up the variables so you can add or subtract them.  

Sep 7­5:46 AM

Homework Examples: Solve the linear system:2y = ­5x + 45x ­ 6y = 8

Step 1:

Step 2:

Step 3:

Solution (     ,    )

(1, 1/2)

Section 7.3 Solve Systems by Adding or Subtracting I can solve systems of linear equations by Adding or Subtracting

Step 1:  Add or Subtract in equations to eliminate one variableStep 2:  Solve for remaining variableStep 3:  Substitute into either original equation to find eliminated               variableNote:  you may have to rearrange the equations to line up the variables so you can add or subtract them.  

Sep 7­5:46 AM

homework: due upon request (see syllabus) Assign Date  Due  #    assigned   date   Description

     new semester and new chapter #55 1/12  1/__     Ch 6 Pink Outline#56 1/13  1/__    Sect 6.1, pg 359, #1, 2, 6­26#57 1/18  1/__    Sect 6.2, pg 366 #3­26, 30­33#58 1/__ 1/__    Sect 6.3, pg 372, #3­25, 29­32#59 1/__ 1/__    Sect 6.4, pg 384, #3­26 #60 1/__ 1/__    Ch 4 graphing review#61 1/__ 1/__    Sect 6.7 Graph 2­variable inequalities WS#62 2/__ 2/__    Sect 6.5, pg 393, # 3­26#63 2/__ 2/__    Ch 6 Test Review WS (5­pages...)

New Chapter#64 2/16  2/21     Ch 7 Pink Outline#65 2/21  2/22     Sect 7.1 Solve by graphing WS #66 2/22  2/23     Sect 7.2 page 439, #3­11#67 2/24  2/27     Sect 7.3 page 447, #3­22Any Questions?

A S7.3 Linear System by Adding and Subtracting.notebook

2

February 24, 2017

Sep 7­5:46 AM