Results 1 to 3 of 3

Math Help - Graphing linear equationg. need help

  1. #1
    Newbie
    Joined
    Oct 2010
    Posts
    10

    Graphing linear equationg. need help

    Draw the graph: x-y=3
    now my question is how do i find the values of y or x?
    can somebody plz help me
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Senior Member Educated's Avatar
    Joined
    Aug 2010
    From
    New Zealand
    Posts
    421
    Thanks
    11
    Put in values for x and solve for y, or vise versa.

    If x = 1, y = ...
    If x = 2, y = ...
    etc.

    Plot these points and you will get your graph.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor

    Joined
    Apr 2005
    Posts
    15,361
    Thanks
    1311
    The graph of a linear equation is a line- and a line is determined by two points.

    For this problem, the simplest thing to do is to choose x= 0, then solve the equation for y to get one point.

    Now choose y= 0 and solve the equation for x to get the second point.

    Plot those two points and draw the line through them.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. graphing linear equation, need help.
    Posted in the Algebra Forum
    Replies: 6
    Last Post: November 10th 2010, 04:55 PM
  2. Graphing Linear Equations:
    Posted in the Algebra Forum
    Replies: 5
    Last Post: May 4th 2010, 08:38 AM
  3. Graphing linear inequalities
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: August 6th 2008, 02:48 PM
  4. Graphing Linear equations?
    Posted in the Pre-Calculus Forum
    Replies: 6
    Last Post: November 18th 2007, 03:08 PM
  5. Graphing linear equation
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: August 30th 2007, 09:30 PM

Search Tags


/mathhelpforum @mathhelpforum