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Algebra: Transformation help

Discussion in 'Random Discussion' started by cheese, Aug 10, 2006.

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  1. cheese

    cheese Thread Starter

    Joined:
    Jun 22, 2003
    Messages:
    2,563
    Hello,

    I cannot get ahold of anyone in my class, and maybe one of you can help :)

    Theres the table we base f off of.
    The problem:

    y=2f(x)

    x | y
    --------
    -2 |
    -1 |
    0 |
    1 |
    2 |
    3 |

    Then I have to graph it. But thats easy. I have all the other ones figured out, but I missed this parts instruction.

    ____________________________

    Summarize in a sentence.
    EQUATION EFFECT
    1. y=f(x+12) ?

    I just need to know how I should write the effect? in words, and im good for the rest.

    Thanks!
     
  2. angelize56

    angelize56 Always remembered in our hearts

    Joined:
    Apr 17, 2002
    Messages:
    82,163
    Poor kid...back in school already!
     
  3. cheese

    cheese Thread Starter

    Joined:
    Jun 22, 2003
    Messages:
    2,563
    Yep :( Its changing next year, Texas state law makes us start 4 mondays into august.

    Stevo
     
  4. angelize56

    angelize56 Always remembered in our hearts

    Joined:
    Apr 17, 2002
    Messages:
    82,163
    This is the first year our kids go back AFTER Labor Day! (y) It should be that way everywhere! :) Good luck getting your problem answered...smart people here! :)
     
  5. BanditFlyer

    BanditFlyer

    Joined:
    Oct 25, 2005
    Messages:
    12,552
    So you just need to fill in the table for the y values?

    Looks pretty simple to me. Looks like y will be equal to double whatever the function of x produces, since y=2( f(x) ).
     
  6. HenryVI

    HenryVI

    Joined:
    May 27, 2005
    Messages:
    3,065
    I'm not sure what you want here cheese....

    y=2f(x) <-- f(x) is the numbers in your X column. F(x) just means put whatever X is into that spot.

    Say you have this:
    Code:
    f(x)=sin(x)^2 + g(f(x))
    and you have to solve for x = 30, then you just put 30 into the x spot, the f(x) at the beginning just shows that it is a function (it isn't relevant).

    OOPS I didnt see the question ::eek:

    1. y=f(x+12) ?

    That is a straight line. Whatever X is just add 12 to it. Then graph y=x+12; it will be a horizontal line on the y-axis.

    And to angel and cheese, I started today..... but next year (when I'll be a senior :rolleyes: ) they are changing us to start after labor day. As you can see I'm also in Tejas.
     
  7. cheese

    cheese Thread Starter

    Joined:
    Jun 22, 2003
    Messages:
    2,563
    Hey,

    I think I figured out the 1st one. It has to related back to the table of F I showed, but I think I get it.

    For the 2nd part though Henry, I dont need to plot it, I just need a word summary of the "effect" of that equation.

    Im not sure what I put there, as I missed that part of class :(

    Just need an explanation on the 2nd one and im good. Thanks guys

    Stevo
     
  8. HenryVI

    HenryVI

    Joined:
    May 27, 2005
    Messages:
    3,065
    Wait a sec................

    it would be a horizontal shift right (negative) 12.
     
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