Results 1 to 2 of 2

Math Help - Quadratic Function Question

  1. #1
    Newbie
    Joined
    Feb 2013
    From
    Pooler, GA
    Posts
    18

    Cool Quadratic Function Question

    For the function f(x) = -3x + 24x - 46

    a. Express the quadratic function in standard form.
    b. Label the coordinates of the vertex.
    c. Find the maximum or minimum value.
    d. Find the x and y-intercepts.
    e. Find the domain and range.

    For (a), I got: -3(x - 4) + 2
    For (b), I got: (4, 2)
    For (c), I got: Maximum value of 2.
    For (d), I got: x-int: 4 +/- √2/3 , y-int: -46.
    For (e), I got: Domain = (-∞, ∞) , Range = (-∞, 2]

    I'm not sure if these are right so can someone confirm?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Joined
    Sep 2012
    From
    Australia
    Posts
    4,011
    Thanks
    740

    Re: Quadratic Function Question

    Hey StephenSkinner.

    I'm going off Wikipedia for definitions, so if that is wrong then please inform us.

    Standard form is y = -3x^2 + 24x - 46
    Vertex point is (4,2)
    Maximum point is y = 2 given x = 4.
    For d I got the same (as long as its SQRT(2/3) and not sqrt(2)/3) and y-int is -46.
    Same as you for e.

    Very well done.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Quadratic function question
    Posted in the Algebra Forum
    Replies: 2
    Last Post: June 30th 2013, 06:24 AM
  2. Quadratic-Quadratic Systems Algebraically Question
    Posted in the Pre-Calculus Forum
    Replies: 4
    Last Post: December 22nd 2012, 10:24 AM
  3. Quadratic Function + linear function
    Posted in the Algebra Forum
    Replies: 4
    Last Post: December 20th 2011, 06:46 PM
  4. Replies: 1
    Last Post: April 1st 2009, 11:47 AM
  5. Replies: 2
    Last Post: March 30th 2008, 03:28 PM

Search Tags


/mathhelpforum @mathhelpforum