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for 6x-3y=15 and that passes through the origin, i got: y=\frac{3x}{5}+5 i don't know how to do the negative reciprocal for this one would it be:
\frac{-1}{3}x?

Wow, thanks. That was pretty simple. But how do I do it if the equation is different like: y+2x=4? And I don't really understand how to work with perpendicular... can u explain it to me? Thanks ;)

Simplify:
(-y^{-5})^5(y^{-2}p^{-2})^3
for that i got
-y^{-25}y^{-6}p^{-6}
then what do i do? Do i put all of it under 1? And is the combination this?
-y^{-19}p^{-6}?

...

http://img53.imageshack.us/img53/5302/306090ne9.png
That's how the triangle looked like (mine is a bit off I think but that's the concept)

And for my other questions is headwind or tailwind add...

30-60-90

if z= 8√2 then
x= 4√2
y= 8√6 can u tell me if this is rite or wrong? Because I think I got it write but is marked wrong. Same goes for this:

if z=6√2 then
x= 3√2
y= 6√6

OK, this would mean further help, for the time does it mean I have to add both of their hours? Like 3+4=7 hrs together?

okay, I showed some work on it and told u what I don't understand about it. I also took out the ones that I have already figured out. Now u do the explaining ^_^

1. A squirrel made a trip of 275 miles in 8 hrs. before noon he averaged 40 mph and after noon he averaged 25 mph. at what time did he begin his trip and when did he end it?

okay, I worked my way...

thanks I got the answer already. I found out it didn't say distinct numbers so x and y could be equal. Now I need help with the other questions. I've tried every way I could but couldn't get it....

there, is that enough work? Because that's all I got up to, the rest I can't do like my other questions cause I can't do (an example) 2(3x+y=12) it won't leave one variable

QUESTION ONE:
x+3y=4
2x-y=1
x=? y=?

QUESTION TWO:
On one day, 4 plumbers and 5 helpers earned $182. Working the same number of hours and at the same rate of pay, 5 plumbers and 6 helpers...

Lol, its not as easy as you say it is. Can u help me do at least one or 2 of my selected problems?

sumone help me simplify these? The "^" means to the power of the number that follows it

√54x^3y^5

2√12x^4y^5

0.5√8x^4y^3

3√75x^3y^5