Results 1 to 5 of 5

Math Help - Need help

  1. #1
    Junior Member
    Joined
    Jun 2005
    Posts
    58

    Need help

    I need help solving this problem.

    Determine the x-intercept and y-intercept of the graph of each equatiion:

    (15) 2x+4y=8
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Site Founder MathGuru's Avatar
    Joined
    Mar 2005
    From
    San Diego
    Posts
    478
    Awards
    1

    intercept

    Graph the equation and you will understand why

    For x intercept (where the graph crosses x-axis) plug in 0 for y.
    for y intercept (where the graph crosses y-axis) plug in 0 for x.

    Try it in a reply and I will correct you.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Jun 2005
    Posts
    58
    (15)2*0+4*0=8

    my answer: 1.875
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Site Founder MathGuru's Avatar
    Joined
    Mar 2005
    From
    San Diego
    Posts
    478
    Awards
    1

    intercepts

    You need to solve x and y intercept seperately.


    First set x = to zero and solve for y:

    2*0+4y=8
    4y=8
    y=2 <---answer for x-intercept

    then set y = 0 and solve for x

    2x+4*0=8
    2x=8
    x=4 <---answer for y-intercept

    Graph the equation and see if you understand what it is we are solving for. Understand that the equation crosses the x axis when y = 0 and vice versa.
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Junior Member
    Joined
    Jun 2005
    Posts
    58

    Talking

    Thank you.
    Follow Math Help Forum on Facebook and Google+


/mathhelpforum @mathhelpforum