Unit 4 - Lesson 14 - Grade 8: Illustrative Mathematics

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Grade 8 Unit 4
Lesson 14: Solving More Systems
CC BY 2021 Illustrative Mathematics®

Instructions

Grade 8 Unit 4
Lesson 14: Solving More Systems
CC BY 2021 Illustrative Mathematics®

Lesson: Solving More Systems

Algebra Talk: Solving Systems Mentally (Warm Up)

Solve these without writing anything down:

Challenge Yourself

Here are a lot of systems of equations: 

Without solving, identify 3 systems that you think would be the least difficult to solve and 3 systems that you think would be the most difficult to solve. Be prepared to explain your reasoning.

Choose 4 systems to solve. At least one should be from your "least difficult" list and one should be from your "most difficult" list.

Five Does Not Equal Seven

Tyler was looking at this system of equations:
He said, "Just looking at the system, I can see it has no solution. If you add two numbers, that sum can’t be equal to two different numbers.”

Do you agree with Tyler?

Cool Down: Solve It

Solve It

Unit 4 - Lesson 14 - Grade 8: Illustrative Mathematics

Algebra Talk: Solving Systems Mentally (Warm Up)

Challenge Yourself

Without solving, identify 3 systems that you think would be the least difficult to solve and 3 systems that you think would be the most difficult to solve. Be prepared to explain your reasoning.

Choose 4 systems to solve. At least one should be from your "least difficult" list and one should be from your "most difficult" list.

Five Does Not Equal Seven

Do you agree with Tyler?

Solve It

Solve this system of equations: