Page 2 of 2 FirstFirst 12
Results 16 to 21 of 21

Thread: Finding the zeros and intercepts---help / check answer?

  1. Sep 15th 2008, 09:02 PM #16
    tiar
    tiar is offline
    Junior Member
    Joined
    Sep 2008
    From
    Canada
    Posts
    42
    Quote Originally Posted by 11rdc11 View Post
    2x - 3y = C

    -3y = -2x + C

    y = \frac{2x}{3} -\frac{C}{3}

    Ok now put in whatever value for C

    The only thing that is happening is the graph is moving up or down. It is easier to see what I'm trying to explain. Try plooting it and you will see what I mean.
    Sorry, I took a break and did another section of math which I've completed for the most part.
    Okay, I am still stuck on this question.
    Let's plug in "2" for C...how would I proceed in solving it? I cannot add 2x + 2 together...I'm really trying to remember how to do this...
    and how would I plot it?
    Thanks in advance.
    Follow Math Help Forum on Facebook and Google+
  2. Sep 15th 2008, 09:08 PM #17
    11rdc11
    11rdc11 is offline
    Super Member 11rdc11's Avatar
    Joined
    Jul 2007
    From
    New Orleans
    Posts
    894
    What are you trying to solve for?
    Follow Math Help Forum on Facebook and Google+
  3. Sep 15th 2008, 09:11 PM #18
    tiar
    tiar is offline
    Junior Member
    Joined
    Sep 2008
    From
    Canada
    Posts
    42
    Wait...I'm not sure. Am I solving for anything? I think I need to solve for x and y if I want to plot the correct corresponding lines to the number I put in for C?
    Ahh I'm so confused...
    Follow Math Help Forum on Facebook and Google+
  4. Sep 15th 2008, 09:15 PM #19
    11rdc11
    11rdc11 is offline
    Super Member 11rdc11's Avatar
    Joined
    Jul 2007
    From
    New Orleans
    Posts
    894
    If you put in 2 for C you have

    y = \frac{2x}{3} -\frac{2}{3}

    Are they asking you to find the x and y intercepts of this equation? Thats the only thing I can see the problem is asking to solve for?
    Follow Math Help Forum on Facebook and Google+
  5. Sep 15th 2008, 09:22 PM #20
    tiar
    tiar is offline
    Junior Member
    Joined
    Sep 2008
    From
    Canada
    Posts
    42
    I guess so?

    If C is an arbitrary real constant, an equation such as 2x - 3y = C is said to define a family of lines. Choose four different values of C and plot the corresponding lines on the same coordinate axes. What is true about hte lines that are members of this family?

    Do you need the intercepts to plot those lines? If you do I am not sure how to solve them. Thanks again.
    Follow Math Help Forum on Facebook and Google+
  6. Sep 15th 2008, 10:10 PM #21
    11rdc11
    11rdc11 is offline
    Super Member 11rdc11's Avatar
    Joined
    Jul 2007
    From
    New Orleans
    Posts
    894
    It would help. Plot them and the answer will be obvious
    Follow Math Help Forum on Facebook and Google+
Page 2 of 2 FirstFirst 12
« Problems on Slope | equation of the normal of the line on point.. »

Similar Math Help Forum Discussions

  1. Would like someone to check my answer for finding gradients and perpendicularity
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: Mar 7th 2011, 03:26 PM
  2. just want to check my answers for x intercepts and y- intercepts vet and Horz Asmptop
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: Feb 23rd 2011, 03:46 AM
  3. Finding intercepts
    Posted in the Pre-Calculus Forum
    Replies: 4
    Last Post: Jul 7th 2010, 09:12 AM
  4. Zeros Localisation Thm. Could someone check
    Posted in the Calculus Forum
    Replies: 4
    Last Post: Oct 24th 2008, 02:24 PM
  5. polynomial, degree and zeros (help) i think i have the answer
    Posted in the Algebra Forum
    Replies: 1
    Last Post: Jul 7th 2008, 06:21 PM

Search Tags


/mathhelpforum @mathhelpforum