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Thread: Graphs & Functions

  1. March 18th 2012, 08:06 PM #1
    iFuuZe
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    Graphs & Functions

    Hi Guys

    I missed a week of school due to going on a holiday and i got a maths test this wednesday, which the teacher is not giving me extra time to study for. He gave 2 practice questions on what we have been doing, but not a worked out example. If you guys can please answear this questions for me as i don't understand them. Also im in year 11 Maths Methods, the questions are:

    1. Find the standard form of the equation of the circle for which the endpoints of a diameter are (-2,3) and (4,-10)

    2. Write the slope-intercepts forms of the equation of the lines through the point (-8,3) and
    (a) parallel
    (b) perpendicular

    To the line 2x+3y=5


    Worked solutions to this questions will be truely appriciated, if you can please answear as quick as possible because i need move on to question 3 & 4 which are more difficult then these, which i dont have a understanding of. please help
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  2. March 18th 2012, 09:39 PM #2
    highvoltage
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    Re: Graphs & Functions

    Graphs & Functions-mhf-03182012.jpg
    Thanks from iFuuZe
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  3. March 18th 2012, 09:52 PM #3
    iFuuZe
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    Re: Graphs & Functions

    highvoltage you are a legend, thanks for taking your own time to help with this, I'm truely greatful
    Last edited by iFuuZe; March 18th 2012 at 09:58 PM.
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  4. March 18th 2012, 09:55 PM #4
    princeps
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    Re: Graphs & Functions

    Quote Originally Posted by iFuuZe View Post
    Hi Guys

    I missed a week of school due to going on a holiday and i got a maths test this wednesday, which the teacher is not giving me extra time to study for. He gave 2 practice questions on what we have been doing, but not a worked out example. If you guys can please answear this questions for me as i don't understand them. Also im in year 11 Maths Methods, the questions are:

    1. Find the standard form of the equation of the circle for which the endpoints of a diameter are (-2,3) and (4,-10)

    2. Write the slope-intercepts forms of the equation of the lines through the point (-8,3) and
    (a) parallel
    (b) perpendicular

    To the line 2x+3y=5


    Worked solutions to this questions will be truely appriciated, if you can please answear as quick as possible because i need move on to question 3 & 4 which are more difficult then these, which i dont have a understanding of. please help
    1#

    (x-x_C)^2 + (y-y_C)^2 = r^2

    where :

    x_C=\frac{x_A+x_B}{2} ~\text{and}~y_C=\frac{y_A+y_B}{2}

    r=\frac{1}{2} \cdot \sqrt{(x_B-x_A)^2+(y_B-y_A)^2}

    2#

    Let :

    p : y=m_1 x+n_1

    q : y=m_2 x+n_2

    then :

    \begin{cases}m_1=m_2, & \text{if } p \parallel q \\m_1 \cdot m_2=-1, & \text{if } p \perp q\end{cases}
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  5. March 19th 2012, 05:46 AM #5
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    Re: Graphs & Functions

    Quote Originally Posted by iFuuZe View Post
    Hi Guys

    I missed a week of school due to going on a holiday and i got a maths test this wednesday, which the teacher is not giving me extra time to study for. He gave 2 practice questions on what we have been doing, but not a worked out example. If you guys can please answear this questions for me as i don't understand them. Also im in year 11 Maths Methods, the questions are:

    1. Find the standard form of the equation of the circle for which the endpoints of a diameter are (-2,3) and (4,-10)

    2. Write the slope-intercepts forms of the equation of the lines through the point (-8,3) and
    (a) parallel
    (b) perpendicular

    To the line 2x+3y=5


    Worked solutions to this questions will be truely appriciated, if you can please answear as quick as possible because i need move on to question 3 & 4 which are more difficult then these, which i dont have a understanding of. please help
    I'm a private maths tutor. If you live in Melbourne and want some tutoring, send me a PM...
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