Results 1 to 3 of 3

Math Help - Linear Graph

  1. #1
    Newbie
    Joined
    Jan 2009
    From
    Australia
    Posts
    5

    Linear Graph

    hey guys not sure if this is the right forum, but i have two questions the first one is

    explain how you can caculate the y-intercept of a staight line that is not expressed in y=mx+c form


    and


    why can't the gradient off a vertical line be caculated?


    thanks guys =]
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Joined
    Oct 2005
    From
    Earth
    Posts
    1,599
    1) What does the y-intercept mean conceptually? It's the point on the graph where the line crosses the x-axis, thus changing y-values from positive to negative or the other way around. So the point will be in the form of (0,m), thus you know x=0 at this intercept. See what to do?

    2) You probably think of slope as (rise)/(run). For a vertical line, what type of fraction does this make?
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor
    Joined
    Oct 2005
    From
    Earth
    Posts
    1,599
    New question, new thread please.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 1
    Last Post: October 2nd 2009, 10:43 AM
  2. A linear graph problem
    Posted in the Pre-Calculus Forum
    Replies: 7
    Last Post: December 15th 2008, 04:02 AM
  3. linear graph
    Posted in the Algebra Forum
    Replies: 1
    Last Post: November 22nd 2008, 09:44 AM
  4. Linear Approximation Graph Help
    Posted in the Calculus Forum
    Replies: 2
    Last Post: November 9th 2008, 04:46 AM
  5. linear graph theory
    Posted in the Geometry Forum
    Replies: 1
    Last Post: June 13th 2008, 02:24 PM

Search Tags


/mathhelpforum @mathhelpforum