
Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion 
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January 10th, 2018, 01:12 PM  #1 
Member Joined: Nov 2012 From: The Netherlands Posts: 40 Thanks: 2  A 15 year old's math assignment has me stumped... any help?
Hi All my kid wants my help here, but I am stumped too. The function(pl. see image) given has p & q as variables.  the graph has the horizontal asymptote line y = 3 the graph intersects at (1,5) find P and q. Thanks in advance ! 
January 10th, 2018, 01:31 PM  #2  
Math Team Joined: Jul 2011 From: Texas Posts: 3,002 Thanks: 1587 
$p$ and $q$ are unknown constants ... $x$ and $f(x)$ are the variables $f(x) = \dfrac{p}{2x+1}  q$ Quote:
Quote:
... solve for $p$  
January 10th, 2018, 01:59 PM  #3 
Member Joined: Nov 2012 From: The Netherlands Posts: 40 Thanks: 2 
You posed this to me: q=3 (why?) I wish I could tell you why ...but I am too out of touch here. I have passed it on to the kid and I hope he can find the why himself (after all, you have completely solved it all, & p =8). * note: as I wrote, he showed me the why on his graph machine . the graph will otherwise be a +ve graph never touching 3. I think he got it ...and that's what counts. It was Fun! Thank You! Last edited by skipjack; January 10th, 2018 at 04:42 PM. 
January 10th, 2018, 04:46 PM  #4 
Global Moderator Joined: Dec 2006 Posts: 20,921 Thanks: 2203 
A graph machine?

January 11th, 2018, 02:29 AM  #5 
Member Joined: Nov 2012 From: The Netherlands Posts: 40 Thanks: 2 
I know..that sounded prehistoric it's his Casio Fx9860GII Last edited by hello_math; January 11th, 2018 at 02:33 AM. 

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