Results 1 to 2 of 2

Thread: equation of lines of best fit problem

  1. October 11th 2010, 06:03 AM #1
    mastermin346
    mastermin346 is offline
    Member
    Joined
    Oct 2009
    Posts
    199

    equation of lines of best fit problem

    The variable x and y are related by the equation y = kH^x, where k and H are constant.Diagram shows the straight line graph obtained by plotting log_4{y} against x


    a)express the equation in its linear form used to obtained the straight line graph shown in diagram.
    Attached Thumbnails Attached Thumbnails equation of lines of best fit problem-diagram.png  
    Follow Math Help Forum on Facebook and Google+
  2. October 11th 2010, 11:04 AM #2
    emakarov
    emakarov is offline
    MHF Contributor
    Joined
    Oct 2009
    Posts
    5,328
    Thanks
    683
    Well, what's your difficulty? We have that \log_4(kH^0)=2 and \log_4(kH^8)=6. From here one can find k and H.

    Actually, it seems that the answer to a) is the equation \log_4y=(6-2)x/8+2.
    Follow Math Help Forum on Facebook and Google+
« Expansion and Factorisation of Algebraic Expressions | Problem Solving (How to set this up) »

Similar Math Help Forum Discussions

  1. Geometry problem prove lines are parallel, cyclic quadrilaterals,other parallel lines
    Posted in the Geometry Forum
    Replies: 1
    Last Post: March 14th 2010, 02:22 PM
  2. equation of lines
    Posted in the Algebra Forum
    Replies: 2
    Last Post: May 11th 2009, 01:00 PM
  3. Equation of Lines
    Posted in the Geometry Forum
    Replies: 3
    Last Post: February 1st 2009, 10:13 PM
  4. Tangent Lines, Parallel Lines, and Normal Lines
    Posted in the Calculus Forum
    Replies: 2
    Last Post: January 25th 2009, 09:41 PM
  5. Equation of 2 lines
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: October 16th 2008, 05:35 PM

Search Tags


/mathhelpforum @mathhelpforum