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Thursday, February 17, 2011

hw #6-5 Linear Inequalities

hw#6-5: Due Tues Feb 22
Read pg 390-393
pg 393 #1-7 All
pg 394 #9-39 mult of 3

 
You should be prepared for random notebook checks. If your notebook is neat and organized, please leave it as isI will expect to see clearly labeled homework (i.e. DATED and NUMBERED - hw #6-5) showing comprehensive work.

If your notebook is neat and organized and easy for you (and me) to follow, leave it as-is and just make sure that assignments are clearly labeled from this point forward.  You should be organized chronologically, but that can be front-to-back or back-to-front, whichever works for you.  If your notebook is a mess, I suggest that you make changes and soon. The notebook checks will be from this point forward, so I DO NOT EXPECT ANYONE TO GO BACK TO PRIOR WORK (or lack thereof).

If you are starting from scratch (i.e. a mess) make sure that your clearly labeled homework pages are interleaved with DATED class notes. Always bring your notebook to class - it is most likely that notebook checks will take place on Unit Test days.

16 comments:

  1. Please see the revised notebook check instructions above (NO STAPLING!).

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  2. SPREAD THE WORD, I'd like to see EVERYONE checking the blog at least once a day. I WOULD LOVE TO SEE some of YOU answering each others questions, rather than me doing ALL of the answering. Any questions that are asked today and tomorrow I will not be answering, in the hopes that some of you will engage in an algebraic discourse (look it up!)... you can even use the chat room on your own, if you like.

    Let me see some education take place this weekend. STRUT YOUR STUFF!!

    If I see FULL PARTICIPATION, I will definitely be persuaded to give some extra credit points on the next test TO EVERYONE... which will be here b4 you can say "systems of linear inequalities!"

    Mr. C.

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  3. Okay.. I hope someone's out there!

    For #30 on pg 394, how do I figure out the three possible amounts of each type of wood from an "un-exact" graph?

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  4. Oh and Mr.C, I have a bunch (seriously, like a 3/4 in pile) of the packets you gave us, like the Problem set blah blahs.. Should I keep them in my binder?

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  5. You can clean out your notebook so that you never have more than the last two units "in tow." That said, my suggestion would be to store problems set and unit tests in an "archive binder" for future reference in high school mathematics. Algebra is the source of all things mathematical!

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  6. As for #30 (and others like it) I'll let you answer your own question. That said, linear inequalities create a solution region (aka a half-plane) that is chock-full of solutions (in the form of ordered pairs) that are NOT on the line. You should be able to easily identify ordered pairs that lie within the solution region, even if you have fat fingers like me!

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  7. I got new binders! YAY!
    And I have a section for Tests & Quizzes, should I lose that?
    And should I keep this unit's Problem Sets in my binder?
    And for #30, okay!

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  8. Please don't go crazy with these notebook checks, folks. I'm expecting to see relatively neat and organized homework, notes, problem sets and recent assessments.

    Everyone organizes themselves a little bit differently. If what you do is working for you... keep doing it. If you have a mess, let's work together to clean ii up. I'm FOR YOU, not AGAINST YOU!!!

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  9. I need help with #39.. I don't know where to start

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  10. Well, since we're in algebra class, why don't we start algebraically. By that I mean, let's define some unknowns.

    You don't know how many CD's you will buy and you don't know how many you will sell, yes?

    x is the number of CD's you will buy
    y is the number of CD's you will sell

    Reading the problem, it sounds like various terms will have to combine to be AT LEAST $10, yes? Do you recall how to mathematically combine things? (Hint: Some folks call it ADDITION). Do you also recall that some things can be positive and some can be negative? How does buying and selling impact positive and negative in this problem?

    lmk if this helped...

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  11. Okay.. Could the equation be:
    (20-5x)+1.50y<= 10
    ?
    I don't know how to graph that, though..

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  12. Well, close (and you should call it an inequality, not an equation, right?). I thought you wanted to leave with AT LEAST $10... does your inequality say that?

    Why do you need the parentheses?

    20-5x+1.50y>=10

    You KNOW how to graph a line in standard form or slope-intercept form, so you need to "get rid of" that 20, right?

    Give it another shot, I think you'll get it!

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  13. Inequality, that's what I meant!
    Oops, typo with the symbol :(
    Oh, I get it!

    So could it be
    -5x+1.50y>=-10

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  14. By the way Mr.C, about the Archive binder where I keep the problem sets, should I bring it to school?

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  15. For #39, you gotsk it!

    NO ARCHIVE BINDERS IN SCHOOL... seriously though, Algebra 1 is the foundation for higher mathematics... you should consider keeping a subset (call it an "archive" or a "portfolio") of your important work and notes as you move along.

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  16. Okay! & I had no trouble graphing it. Thanks for the help!

    And Ok!

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