i have no clue how to do this problem ... can someone please help ?!?!? is there a formula ?

2. Originally Posted by bringash

i have no clue how to do this problem ... can someone please help ?!?!? is there a formula ?
$H(w)= \frac{c}{w}$

$H(9)=2.78... so,$

$2.78 = \frac{c}{9}$

$\Rightarrow c = \frac{2.78}{9} = .30889$

3. You have a point on the graph (9,2.78). It gives you that H(w) = Constant / w. Plug in the H value, 2.78, for H(w), and the w value, 9, for w, and solve for the constant, 2.78/9.

4. thanks alot guys

5. Try cancelling.

6. Originally Posted by bringash
thanks alot guys

When $x=-2$ or $x=1$, you end up divding the terms by 0.

What happens when you divide a term by 0?

Try cancelling.

thanks bro no wonder this website is called mathHELPforum.com

8. Originally Posted by harish21
When $x=-2$ or $x=1$, you end up divding the terms by 0.

What happens when you divide a term by 0?
that says does not equal

9. im having trouble understanding the wording of the second problem thats why i resorted to you guys for help ... can you please tell me if its true or false so i can do the other ones that are similar ... and please explain why its true or false

10. Originally Posted by bringash
that says does not equal

Yes. the question says when x does NOT equal -2 or 1.

When x = -2 or x =1, you are dividing by 0, which gives $\infty$

So, when x is any other number except -2 or 1, then the equation makes sense.

So, what can you conclude from here?

11. that its true ... thanks alot bro

12. im sorry for the dumb questions, but what would i do in this case ?

13. Same as before, H=25, w=10. Substitiute and solve for the constant. $\mathrm{constant} = H/w = 25/10 = \cdots$

Originally Posted by harish21
When x = -2 or x =1, you are dividing by 0, which gives $\infty$
Shh, $-\infty$ don't cry. I know everyone only thinks about your brother $+\infty$...

Same as before, H=25, w=10. Substitiute and solve for the constant. $\mathrm{constant} = H/w = 25/10 = \cdots$
Shh, $-\infty$ don't cry. I know everyone only thinks about your brother $+\infty$...