Results 1 to 6 of 6

Math Help - Check work...Algebra 2 packet

  1. #1
    Newbie
    Joined
    Dec 2007
    Posts
    17

    Check work...Algebra 2 packet

    I was wondering if maybe someone might be able to take a look at this? I have been having a very hard time with it.



    Follow Math Help Forum on Facebook and Google+

  2. #2
    GAMMA Mathematics
    colby2152's Avatar
    Joined
    Nov 2007
    From
    Alexandria, VA
    Posts
    1,172
    Awards
    1
    #6. How many integer solutions does this inequality have? |x+12| \leq 3

    The answer is not zero. Try plugging in x = -9, -10, -11, -12, -13, -14, or -15. Seven different possible solutions. To solve for this algebraically, think of the absolute value as a boundary...

    - 3 \leq x+12 \leq 3
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Dec 2007
    Posts
    17
    Thank you very much! I appreciate you taking the time to look over my work...are there any problems with any of the others?
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Newbie
    Joined
    Nov 2007
    Posts
    21
    #8 on page 1 is wrong: D would give an inequality of x\geq-5. The graph does not represent this.

    Page 4:

    #2. You found the y-int. To find the x-int you must plug 0 into y to find where it will hit the x-axis.

    #3. Slope is \frac{rise}{run}. You did it backwards. It should be up 2 over 3. \frac{2}{3}=C
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Newbie
    Joined
    Dec 2007
    Posts
    17
    I am a little confused on number 4 on page 1...can anyone help me with that...now that i look at it, it looks like student B might be correct?
    Follow Math Help Forum on Facebook and Google+

  6. #6
    Newbie
    Joined
    Nov 2007
    Posts
    21
    No your answer is correct Neither student performed the distribution correct, Student b however somehow got the answer correct. Perhaps this is a trick perhaps a mistake in the question. Neither student, however distributed correctly.

    Student B made a mistake in distributing. In front of the parenthesis is -2. So you multiply that -2 by everything inside the parenthesis. It should be:
    4x+(-2)(-x)+(-2)(3)=4x+(2x)+(-6)=4x+2x-6=6x-6
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 4
    Last Post: March 12th 2011, 04:05 AM
  2. Work--please check my work for me
    Posted in the Calculus Forum
    Replies: 3
    Last Post: February 1st 2011, 09:02 AM
  3. Replies: 1
    Last Post: July 21st 2010, 06:02 PM
  4. Algebra Ratio Story Problem. Check work?
    Posted in the Algebra Forum
    Replies: 0
    Last Post: March 10th 2008, 04:28 PM
  5. Algebra 2 problems...check work
    Posted in the Algebra Forum
    Replies: 2
    Last Post: December 2nd 2007, 07:07 PM

Search Tags


/mathhelpforum @mathhelpforum