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No Clickers. Bellwork. Sketch the equation -2x+y=1 It takes 3 hours to mow a lawn and 2 hours to trim hedges. You spend 16 hours doing yard work. What are two possible numbers of lawns you mowed and hedges you trimmed?. Y. X. Bellwork Solution. Graph the equation -2x+y=1.

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Bellwork

No Clickers

Bellwork

  • Sketch the equation -2x+y=1

  • It takes 3 hours to mow a lawn and 2 hours to trim hedges. You spend 16 hours doing yard work. What are two possible numbers of lawns you mowed and hedges you trimmed?


Bellwork solution

Y

X

Bellwork Solution

  • Graph the equation -2x+y=1


Bellwork solution1
Bellwork Solution

  • It takes 3 hours to mow a lawn and 2 hours to trim hedges. You spend 16 hours doing yard work. What are two possible numbers of lawns you mowed and hedges you trimmed?



The concept
The Concept

  • Up until this point we’ve dealt with only one dimensional or two dimensional equations and inequalities

  • Today we’re going to talk about systems of linear equations

  • In this kinds of equations, we’re going to find exactly one solution to two sets of criteria or equations

  • There are several different ways for us to do solve systems of equations

  • The skills that we learn in this chapter will become invaluable in later chapters


Solving by graphing
Solving by Graphing

  • The most basic way in which to solve systems of equations is to solve by graphing

  • Let’s start by graphing

    y=3x+6

    y=2x+4


Y

X


Homework
Homework

  • 7.1

    • 1-11, 18-35, 37-41 odd, 43-48


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