Permian Geometry

Hey, I’m here for ya…but please post your question as a “comment” for the most recent blog post of mine.  This makes it easier for others to see what’s been asked and answered.  Thanks!

Here are the pages for Section 1.5 in case you don’t have a book at home or the CD:

page_35

page_36

page_37

This is the blog for Ms. Fry’s Geometry students.  It’s purpose is to provide a forum for questions, answers, and posting of Extra Credit problems!

All students who wish to post questions or comments should register (it’s free).  I’m not always online to moderate conversations, so if I don’t reply to your comment right away, just keep checking back because I will always check sometime each evening.  I will always reply to your comment.

Please feel free to help each other!  And…watch for Extra Credit problems!

Ms. Fry

1.  See if you can factor out a GCF from all terms.

2.  Are there more than 3 terms?   Factor by Grouping.

3.  Is it Difference of Squares?  If so, use the pattern.

4.  Is it a Perfect Square Trinomial?  If so, use the pattern.

5.  Is there a coefficient of the leading term other than 1?  If so, multiply the coefficient of x^2 times the constant and that becomes your product in the diamond.  Solve the diamond.  Then use the rectangle to figure out the dimensions.

6.  Is the coefficient of x^2 =1?  Use the diamond.

Use a diamond to find the two numbers that multiply to give you the constant and that also add to give you the coefficient of the middle term. 

Example:    x^2 + 2x – 15            

-15 is the constant (or product)…so it goes on the top of the diamond.  +2 is the coefficient of the middle term…so it goes on the bottom of the diamond. 

Solve the diamond:  5, -3       >>>>   Put the numbers in factored form:  (x + 5)(x – 3)

If you’re asked to solve the quadratic equation (or there is an equal sign):

First make sure that the equation is equal to zero.  If there are 2 binomials = some number, you will need to multiply out the binomials using foil, then subtract the other side to make the whole equation equal to zero, then refactor.

Once you have the trinomial factored, set each factor equal to zero.  Solve each of those two equations.  Remember that, in a word problem, one of the solutions might be extraneous.  Think about which one makes sense for what’s going on in the problem.

SHOW YOUR WORK!  DON’T TAKE SHORTCUTS!  SHOW YOUR WORK!

That’s it for me tonight.  Have to play taxi and go get my daughter from work. It will be late, late when I get home, so I probably won’t get back online tonight. 

Feel free to help each other or view some YouTube videos by searching for “multiplying polynomials”.

REFER TO THE EXAMPLES WE DID IN CLASS!!!!

I cannot do this regularly, but here are the pdf files of the homework pages from the book:

p515

p516

p517

p518

Here are a couple YouTube links that review fractional exponents:

http://www.youtube.com/watch?v=aYE26a5E1iU

http://www.youtube.com/watch?v=9UB2TpHPGo0

Hopefully, by seeing some additional examples and instruction, you can move on with your assignment.

You may be wondering why your comment doesn’t show up when you hit save.  If you haven’t registered your email with the site, your comment must first be approved by me before it will post.  All you have to do is register your email (which remains private and free) with Edublogs and then each comment will not need to be approved by me.  I’m the only one who can see your email address and I promise never to sell or share it!  So, by registering, you can still post comments and get feedback from other students when I’m not moderating the blog.

Getting a free email address is easy.  You can sign up for a free email account with Yahoo! or Gmail (Google).  These sites do not have pop-ups associated with them like some other free email sites do.  When you sign up for a Gmail or Yahoo! account it will ask if you want to install a toolbar, but you don’t have to install it.  Just uncheck the box if you don’t want it.  Personally, I love my Google toolbar.  I also use Google bookmarks because this way I can access all my bookmarks on any computer!

You should know how to:

• match graphs to systems of linear inequalities.
• write and solve a system of equations from a word problem.
• determine if an ordered pair is a solution to a system of equations.
• solve a system of equations using the method you prefer (calculator or substitution).
• determine how many solutions a system of equations will have.
• use SUBSTITUTION (showing all work) to solve a system.
• graph a system of equations and state the solution.
• graph a system of inequalities.