Equations and Systems

2020.10.23 10:57 am - 11:40 am

Teaching point: How do we solve systems of equations in 3 variables?

Class Google Meet Link

Do Now

In Algebra 1 you learned how to solve a system of equations.

What methods do you remember using to solve?

Use one of those methods to solve the following system:

2x + y = 8

x - 3y = -3

Agenda

Do now (5 - 10 minutes)

Solving Systems in 3 Equations (15 - 20 minutes)

Practice (10 - 15 minutes)

Solving Systems in 3 Equations

Here is the lesson. I have included a video in case you need extra support.

2020.10.23 Systems of equations in 3 variables

Intro to linear systems with 3 variables (video) | Khan AcademySal discusses how we approach solving systems of three variables algebraically, and how we visualize it graphically.

Homework

There is one problem for you to practice. The solution is at the bottom for you to check. If there is no work shown you will not receive credit. Work can be in a notebook and a picture uploaded into the assignment or you may type right in the document.

We have come to the end of Unit 1. We will review and have a test next week and begin unit 2. We will be graphing in Unit 2 so please make sure that you have graph paper.

Systems with 3 Variables HW

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