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  • Simple Grade 10 Math question

    I'm doing the review questions assigned for my grade 10 math exam on monday (tommorow) and i got a question about a question in the text book.

    16. triangle DEF has vertices D(-2, 4), E (0, -2) and F (6, 2). Determine...

    a) an equation for DG, the median from D to EF
    b) an equation for FC, the altitude from F to DE
    c) an equation for AB, the right bisector of DF

    first off what is an altitude, median and right bisector??

    The text-book answers are:

    a) 4x + 5y = 12
    b) x - 3y = 0
    c) 4x - y = 5

    The solutions (showing the steps) to those questions would be greatly appreciated

    Edit: got a and b... need c still
    Last edited by Tommie31; 01-28-2007, 04:00 PM.
    It's Game time; that was Dre's favourite line
    Back when Proof was in the booth and I recited his lines

  • #2
    Is there any more information?

    Comment


    • #3
      no.... but i need to know how to find the equation of an altitue of a triangle.

      for example, to find the equation for DG, the median from D to EF, you find the midpoint of EF, then you find the slope of DG, then you use "y - y1 = m (x - x1).

      but how do i find the equation for FC, the altitude from F to DE
      It's Game time; that was Dre's favourite line
      Back when Proof was in the booth and I recited his lines

      Comment


      • #4
        Originally posted by Tommie31 View Post
        no.... but i need to know how to find the equation of an altitue of a triangle.
        for example, to find the equation for DG, the median from D to EF, you find the midpoint of EF, then you find the slope of DG, then you use "y - y1 = m (x - x1).
        but how do i find the equation for FC, the altitude from F to DE
        Damn i'm in 8th grade and we're doin that "y-y1=m(x-x1) shit..
        I rap.

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        • #5
          i have grade 10 math next semester

          what school do u go to?
          [қ.я..z.ї.f.ϊ.ε.đ]---[κ.я..z.ў][т.о.м.ъ.о.ұ]
          Props to makeubleed fah my crazy avy

          www.applyimage.co.uk/forum

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          • #6
            Originally posted by SHADY_WARRIOR View Post
            Damn i'm in 8th grade and we're doin that "y-y1=m(x-x1) shit..
            same here, but ours isnt exactly like that, but its close.

            Comment


            • #7
              sheeeeit.... I'm done pure math 30 and i can't remember how to do any of that

              Comment


              • #8
                Originally posted by krazy_tomboy97 View Post
                i have grade 10 math next semester

                what school do u go to?
                i go to a school in Kitchener.. pretty close to Mississauga (sp?)
                It's Game time; that was Dre's favourite line
                Back when Proof was in the booth and I recited his lines

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                • #9
                  thank god i graduated high school
                  歐陽靖

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                  • #10
                    Originally posted by Tommie31 View Post
                    i go to a school in Kitchener.. pretty close to Mississauga (sp?)

                    ohh....cool
                    [қ.я..z.ї.f.ϊ.ε.đ]---[κ.я..z.ў][т.о.м.ъ.о.ұ]
                    Props to makeubleed fah my crazy avy

                    www.applyimage.co.uk/forum

                    Comment


                    • #11
                      ill do part c if i cud be assed
                      GROWN MAN SH!T AND SQUIDBERT FOR VET
                      They're bringing sexy back
                      *̡͌l̡*̡̡ ̴̡ı̴̴̡ ̡̡͡|̲̲̲͡͡͡ ̲▫̲͡ ̲̲̲͡͡π̲̲͡͡ ̲̲͡▫̲̲͡͡ ̲|̡̡̡ ̡ ̴̡ı̴̡ *̡͌l̡*

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                      • #12
                        Originally posted by Ekis View Post
                        thank god i graduated high school
                        lol me too... I didnt know there was some young ass cats on this board... I remember I joined here when I was in grade 10
                        WOOOORD FAM

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                        • #13
                          c)

                          first find midpoint of DF

                          ( (x1+x2 ),(y1+y2) )

                          ( (-2 + 6) /2, (4 + 2) /2 )

                          (2, 3) <- midpoint of DF

                          the find gradient of DF using (y2-y1/x2-x1)

                          you can do that yourself, it gets you -(1/4)

                          then since the bisector is perpendicular, it is equal to 4

                          (m = -1/n)

                          then just use y-y1 = m (x-x1)
                          GROWN MAN SH!T AND SQUIDBERT FOR VET
                          They're bringing sexy back
                          *̡͌l̡*̡̡ ̴̡ı̴̴̡ ̡̡͡|̲̲̲͡͡͡ ̲▫̲͡ ̲̲̲͡͡π̲̲͡͡ ̲̲͡▫̲̲͡͡ ̲|̡̡̡ ̡ ̴̡ı̴̡ *̡͌l̡*

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                          • #14
                            I'm in grade ten, but I'm in grade eleven math.

                            I don't remember how to do most parts of Geometry. Sorry.
                            Love, live life, proceed, progress

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                            • #15
                              Originally posted by Ekis View Post
                              thank god i graduated high school
                              Originally posted by Tanner
                              at least youre not hungover and have to sneak out a fat 30 yr old white bitch who you were banging in your parents house last night.

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