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Lesson 8-2: Equations With Two Variables

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Uploaded by on Apr 15, 2008

This video walks through the process of graphing linear equations using ordered pairs. It includes four examples.

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Education

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Standard YouTube License

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Uploader Comments (mbrandl11)

  • hey ,if its 3x-2y=12 ??

  • @FishhyGames

    In that situation we want to solve the equation for y to get it in slope-intercept form (y = mx + b).

    Start by subtracting 3x from both sides.

    3x - 3x - 2y = -3x + 12

    -2y = -3x + 12

    Then divide everything by -2 and simplify.

    -2y/-2 = -3x/-2 + 12/-2

    y = (3/2)x - 6

    Then we can pick out the y-intercept and the slope to graph.

    I hope that helps! Keep working hard on your math! :-)

  • How Do You Do Linear Equations Like This One :

    y=3x And 10x=-5y

    Please Answer I Need Serious Help

  • @PrincetonsMainChick

    What are you asked to do with them? Graph them? Solve the system? Let me know and I'll be happy to help! :-)

  • @mbrandl11 Solve And Then Grpah Them ! Thanks = )

  • @PrincetonsMainChick

    Ok, check out my video entitled "Solving Systems of Linear Equations by Graphing". I think that'll be helpful. :-)

Top Comments

  • Thank you, thank you, thank you. I love the way to speak to the students. You say it just the right way. You make it so clear to understand. I home school my son and it is such a challenge not only for me to remember how to do the exercises but to teach it. Thank you for such a great site.

  • thx dude i can now do linear equations thx a lot man

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All Comments (26)

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  • OMG! I cant believe I already know how to solve!! thanks for your help..! I can now take the test tomorrow!!

  • this help me undestand even morehave to take a quiz and a test

  • THANK YOU

  • i learned this in 1 go and my teacher just can get it.mrbrandl11 teach at my school!

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