Lil' Ho-Chi-Minh need check on math!
Ho-Chi-Minh
08-01-2005, 00:59
Here question is:
Solve the equation (x-3)y+7=(x-1)y-5 for y. Can you solve the equation for x? explain.
I simplified:
yx-3y+7 = yx-y-5 then
yx+7=yx+2y-5 then
yx+12=yx+2y then
12=2y then
6=y
Finally, you can't solve for x because the two x's cancel each other out.
Is Ho-Chi Right!?
The White Hats
08-01-2005, 01:11
Yes
Ho-Chi-Minh
08-01-2005, 01:15
Yay! Ho-Chi!
Ho-Chi-Minh
08-01-2005, 01:25
Oh man! Ho-Chi need more help!
How would one go about evaluating this function?
f(x)=x-11
Sorry to be such a Vietnamese pain but we haven't gotten our Algebra books yet so I can't use the book to see their examples!
Nihilistic Beginners
08-01-2005, 01:27
Ho-Chi are you tricking these people into doing your homework for you?
Bunglejinx
08-01-2005, 01:32
Here question is:
Solve the equation (x-3)y+7=(x-1)y-5 for y. Can you solve the equation for x? explain.
I simplified:
yx-3y+7 = yx-y-5 then
yx+7=yx+2y-5 then
yx+12=yx+2y then
12=2y then
6=y
Finally, you can't solve for x because the two x's cancel each other out.
Is Ho-Chi Right!?
Not completley.. Now that you've solved for y you can plug in 6 for y and solve for x.
Ho-Chi-Minh
08-01-2005, 01:34
No, I have many, many, many more problems to do, but you see I haven't had a math class for two semesters and a summer break so I don't remember all of this stuff.
We haven't gotten our Algebra books yet, either, so I can't look there for help. I just want to know how to evaluate that one so I can't an idea as how to evaluate the others.
The White Hats
08-01-2005, 01:36
Not completley.. Now that you've solved for y you can plug in 6 for y and solve for x.
No you can't - you just end up with x=x
Ho-Chi-Minh
08-01-2005, 01:41
Thank you White Hats.
The White Hats
08-01-2005, 01:51
Oh man! Ho-Chi need more help!
How would one go about evaluating this function?
f(x)=x-11
Sorry to be such a Vietnamese pain but we haven't gotten our Algebra books yet so I can't use the book to see their examples!
I think you need to specify a value for x before you can evaluate the function (I'm not sure - it's unfamiliar terminology to me). Eg, if x=3, f(x) = -8.
But, rather than trust some random guy on a forum (who happens to have a couple of maths degrees, but equally might just be a jerk yanking your chain), you'd probably be better off googling an algebra resource like this (http://www.purplemath.com/index.htm) .
You Forgot Poland
08-01-2005, 02:44
I can vouch for Ho-Chi. He is not one of the bad, sneaky black-pajama-ed Communists who tricks forum members into doing his math homework. Ho-Chi has participated in discussions about how or why an answer might be right or wrong. And above, Ho-Chi ventured a guess and showed all of Ho-Chi's work.