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View Full Version : Math guys... 7th grade homework again.



Mandelon
12-13-2006, 08:16 PM
My 7thg grader is having issues with this one and I sure don't remember this stuff:
Find the range of each function for the given domain:
1. f (x) = 3x + 2 :confused: D= {-2, 0, 2}
2. g (x) = 9 - 5x :confused: D= {-3, -1, 1
3. f (t) = t (t) + 4t :skull: D={4, 0, -4}
:confused: t-6
the t-6 is supposed to be under the underline, but the forums won't let me space it like that...:cry:
Any way to explain how to solve this would help, there are ten of the problems...

YeLLowBoaT
12-13-2006, 08:17 PM
D= domain( x) Range (would be y)
was the domain list as (...) or [...] and yes it does make a diff.( in this case I think they want you to plug in the numbers.)

Mandelon
12-13-2006, 08:20 PM
It was just as I typed it with the { }'s
It sucks to be the dad of a smart 7th grader and not know what to help with....:cry:
English, I've got covered.....math like this...not so much. :hammerhea

YeLLowBoaT
12-13-2006, 08:23 PM
You have PM if its needed... I'll be up til about 10.

Mandelon
12-13-2006, 08:24 PM
Its not Cap'n Morgan and Root Beer..............:hammerhea :D

Phat Matt
12-13-2006, 08:31 PM
Don't you just plug in each # for x to get the range of the function?
The first one being 4,2,8?

YeLLowBoaT
12-13-2006, 08:33 PM
yes normally thats what you do, but normall domain is listed in with just 2 numbers per set.

Phat Matt
12-13-2006, 08:33 PM
#2
24,14,4

Phat Matt
12-13-2006, 08:35 PM
yes normally thats what you do, but normall domain is listed in with just 2 numbers per set.
How technical are we going to get in this 7th grade math? :D
Mandy, aren't the answers in the back of the book? :)

YeLLowBoaT
12-13-2006, 08:36 PM
Actaully they will use this stuff forever.( in thier math classes.)
the diffrence between (a,b) and [a, b] is huge.

Kachina26
12-13-2006, 08:37 PM
Mandy, does she have the text book at home? They have examples in the front of the section that walk you through it step by step. I also saw this on TV the other day, pretty cool pen (http://www.flypentop.com/view/page.home/home;jsessionid=37129A7997EBCF54B6986E0FA0096B66.f ly_1?s=algebra)

Phat Matt
12-13-2006, 08:40 PM
#3
-16, 0, 0

CornWater
12-13-2006, 08:48 PM
Check out the big brain on Brad... you a smart mother fu#.@#
:D

RiverRatMike
12-13-2006, 08:58 PM
My 7thg grader is having issues with this one and I sure don't remember this stuff:
Find the range of each function for the given domain:
1. f (x) = 3x + 2 :confused: D= {-2, 0, 2}
2. g (x) = 9 - 5x :confused: D= {-3, -1, 1
3. f (t) = t (t) + 4t :skull: D={4, 0, -4}
:confused: t-6
the t-6 is supposed to be under the underline, but the forums won't let me space it like that...:cry:
Any way to explain how to solve this would help, there are ten of the problems...
WTF!

38687
12-13-2006, 09:56 PM
WTF!
Yah, what he said!

cap'n chuy
12-14-2006, 01:58 AM
the answer to #1 is: (-infinity, +infinity)
#2 is: (+infinity, -infinity)
#3 is: (-infinity, 1)U(+infinity, 32)
- means negative
+ means positive
i wrote out infinity because there is no sign on the key board for infinity like would be written in math, a kind of sideways 8.

2forcefull
12-14-2006, 03:41 AM
the answer to #1 is: (-infinity, +infinity)
#2 is: (+infinity, -infinity)
#3 is: (-infinity, 1)U(+infinity, 32)
- means negative
+ means positive
i wrote out infinity because there is no sign on the key board for infinity like would be written in math, a kind of sideways 8.
WTF Chuy, you up and doing math teach'n???
BTW, how was the dunes???
I know what you mean about the key board:cry:
I was try'n to load the program for my camera'
was almost done and it said to push "any key"to finish,
WTF, my key board don't have an "Any" key, Oh well
FOC. computers anyway, and WTF am I doing up:confused:
SLEEP POST'N :sleeping: :sleeping: :sleeping: :sleeping: :mix: