Results 1 to 2 of 2

Math Help - slope-intercept

  1. #1
    Newbie Millys's Avatar
    Joined
    May 2008
    Posts
    1

    Exclamation slope-intercept

    Ok , so i've got some more homework and i need some help.

    Basically in maths we are doing graphs and this is my homework

    I have to make a poster explaning how to draw a graph from an equation.
    Example (which iam using) y=2x+3.
    my extension is that
    I have been introduced to gradient and y-intercept. Investigate the connection between the equation of the line and the gradient and y-intercept of the line.


    Thank you.

    By the way iam 13 so please explain simply because i sometimes dont understand these big words you guys use! haha

    thanks youuuuuu xx
    Follow Math Help Forum on Facebook and Google+

  2. #2
    A riddle wrapped in an enigma
    masters's Avatar
    Joined
    Jan 2008
    From
    Big Stone Gap, Virginia
    Posts
    2,551
    Thanks
    12
    Awards
    1

    Slope-Intercept Form

    y = 2x + 3 is in "slope-intercept form, which is y = mx + b.

    m = slope (gradient)
    b = y-intercept (where the line crosses the y axis)

    In your equation, slope(m) = 2 and it crosses the y-axis at (0, 3)

    If you wish to graph the equation, locate (0, 3) on the y-axis.

    Your slope is in the form of \frac{change \ in \ y}{change \ in \ x}

    So, from (0, 3), move up 2 units and right 1 unit for m=\frac{2}{1} to locate your second point (1, 5). Draw the line through these two points, and the linear equation is graphed.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. how does m = b (or slope=y-intercept
    Posted in the Advanced Statistics Forum
    Replies: 2
    Last Post: February 15th 2011, 08:27 AM
  2. Slope-Intercept
    Posted in the Pre-Calculus Forum
    Replies: 5
    Last Post: January 5th 2008, 09:34 PM
  3. Help with slope and y-intercept
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: March 27th 2007, 11:34 PM
  4. slope and y-intercept.
    Posted in the Pre-Calculus Forum
    Replies: 4
    Last Post: March 21st 2007, 09:58 AM
  5. Slope & Y-Intercept
    Posted in the Advanced Algebra Forum
    Replies: 1
    Last Post: March 28th 2005, 10:10 PM

Search Tags


/mathhelpforum @mathhelpforum