Sec. 4.3 (Part 1) - Elimination Method (Alg 1)

​Sec. 4.3: Solving Systems Using

Elimination (Part 1)

​Materials Needed

​1) Chapter 4 Note Packet

2) Pencil

3) Calculator

4) Focus and an "I can do it" mentality!​

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​

Some text here about the topic of discussion

​Please turn to p. 12 in your note packet and fill in your notes as you watch the video on the next slide.

​Please complete the next three problems on p. 17 of your note packet. This is an extra practice page.

Multiple Choice

• (1, 4)

• (4, 1)

• (1, -4)

• (-4, 1)

Multiple Choice

• (-7, -1)

• (1, 7)

• (-1, -7)

• (7, 1)

Multiple Choice

Given the system of equations, what is the value of x + y? (Find x and y first using the elimination method, then add them together.)

• 2

• 8

• 6

• 0

​Please continue filling in your notes on p. 12 as you watch the video on the next slide.

​Please complete the next two problems on p. 17 of your note packet.

Multiple Choice

Solve the system using elimination.  

−8x − 10y = 20

−8x − 6y = −4 

• Infinite number of solutions  
• (6, 5) 
• (−6, −5) 
• (5, −6) 

Multiple Choice

Solve the following using elimination.
4x+4y=4
3x+4y=10

• (7,-6)
• (-6,7)
• (6,7)
• (7,6)

​Please continue filling in your notes on p. 12 as you watch the video on the next slide.

​After completing the three problems on p. 13 in your notes, enter your answers on the next three slides.

Fill in the Blanks

Practice #1 from Notes:

x + y =8

x - y = 4

Type your solution as an ordered pair. Be sure to use parentheses and do not put spaces between any part of your answer.

Fill in the Blanks

Practice #2 from Notes

2x - y = 7

3x + y = 8

Type your solution as an ordered pair. Be sure to use parentheses and do not put spaces between any part of your answer.

Fill in the Blanks

Practice #3 from Notes

3x + 2y = 7

3x - 3y = -18

Type your solution as an ordered pair. Be sure to use parentheses and do not put spaces between any part of your answer.

Multiple Select

Please rate your effort in understanding today's lesson.

• I took the notes and tried all the problems.

• I took the notes but did not give my best effort in trying to solve the problems on my own.

• I took the notes but didn't really try to understand the concepts. Therefore, I didn't know how to even start the problems.

• I did my own thing during class.

Multiple Select

Please rate your understanding of today's lesson.

• I could ace a quiz over this material right now.

• I know how to eliminate a variable but don't understand how to find the second variable.

• I understand but was confused when having to multiple an equation by -1.

• I am confused after today's lesson.

​Thanks for your participation today!