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Math Help - Slope/Graph--Algebra ?'s

  1. #1
    Junior Member fluffy_penguin's Avatar
    Joined
    Sep 2007
    Posts
    39

    Angry Slope/Graph--Algebra ?'s

    I need help with 5.
    I'd like problems 1,2,3,4,6,9,10 checked to make sure they are right.
    And I need help with 7,8,9

    Prob 5:
    http://img519.imageshack.us/img519/8536/probppo9.png

    I got this for the slope, but I'm at a loss for how to graph the thing.

    Also I did these and was wondering if anyone could check them.

    Prob 1: http://img405.imageshack.us/img405/2677/1111zp6.jpg
    Prob 2: http://img441.imageshack.us/img441/3389/2222uu1.jpg
    Prob 3: http://img214.imageshack.us/img214/5576/33333zn1.jpg
    Prob 4: http://img441.imageshack.us/img441/411/4444rg3.jpg
    (Though I must admit my confusion for this one)
    -6-1
    ____
    -9-6 = -7/-15 And I'm not sure whether I should write it as: -7/-15, -7/15, 7/15 ??

    Prob 6: http://img405.imageshack.us/img405/2640/6666bu5.jpg
    Prob 10: http://img214.imageshack.us/img214/7554/1010xc0.jpg
    (I'm pretty sure that it's yes)

    Prob 7: http://img441.imageshack.us/img441/1343/777us1.jpg

    Prob 8: http://img214.imageshack.us/img214/4755/888xf4.jpg

    Prob 9: http://img405.imageshack.us/img405/8595/999zy6.jpg
    Chart
    x|y
    o|-3
    ?|0
    5|17

    Tested 0, 0 True
    Prob 9: http://img404.imageshack.us/img404/6333/9hardzx2.jpg

    Am I really supposed to have a new thread for each problem? Seems a bit spamful >>
    Last edited by fluffy_penguin; September 14th 2007 at 10:13 AM. Reason: New link for Problem 9
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  2. #2
    MHF Contributor red_dog's Avatar
    Joined
    Jun 2007
    From
    Medgidia, Romania
    Posts
    1,252
    Thanks
    5
    5) The slope is correct and the graph is A
    1) Correct
    2) Correct
    3) Correct
    4) The slope is \displaystyle\frac{7}{15}
    6) Correct
    10) Correct
    7) The equation is \displaystyle y+4=\frac{7}{19}(x+2)\Rightarrow 7x-19y=62
    8) The slope is \displaystyle\frac{5}{7}.
    The equation is \displaystyle y+8=\frac{5}{7}(x-5)\Rightarrow y=\frac{5}{7}x-\frac{60}{7}
    9) B
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