Results 1 to 3 of 3

Math Help - Writing Linear Equations?

  1. #1
    Newbie
    Joined
    Dec 2010
    Posts
    11

    Exclamation Writing Linear Equations?

    How can you write an equation for the lines satisfying these conditions:
    Passing through the point (0,4) and having a slope of 3??

    Please explain to me and show all work!
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Master Of Puppets
    pickslides's Avatar
    Joined
    Sep 2008
    From
    Melbourne
    Posts
    5,236
    Thanks
    29
    Well the equation of a line is y=mx+c

    Where m is the gradient (slope) and c is the y-intercept.

    you are told what m is. Subtitute this into the equation, you get y=3x+c.

    Finally sustitute in the (x,y) = (0,4) into y=3x+c to solve for c, then you are finished.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Senior Member
    Joined
    Jul 2009
    From
    Melbourne
    Posts
    274
    Thanks
    4
    Or you can use the one point formula:

     y - y_{1} = m(x-x_{1})
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Writing Equations
    Posted in the Algebra Forum
    Replies: 7
    Last Post: December 7th 2011, 06:38 PM
  2. Writing system of linear equations.
    Posted in the Algebra Forum
    Replies: 4
    Last Post: November 23rd 2010, 08:52 AM
  3. writing equations
    Posted in the Number Theory Forum
    Replies: 2
    Last Post: April 10th 2010, 06:47 PM
  4. Writing equations
    Posted in the Algebra Forum
    Replies: 1
    Last Post: June 17th 2009, 05:39 PM
  5. Replies: 1
    Last Post: January 23rd 2008, 05:12 PM

Search Tags


/mathhelpforum @mathhelpforum