
Math General Math Forum  For general math related discussion and news 
 LinkBack  Thread Tools  Display Modes 
September 6th, 2017, 10:13 AM  #1 
Newbie Joined: Sep 2017 From: Usa Posts: 4 Thanks: 0  (People and Relationships) Can You Find The Equation?
I discovered something cool about points and lines, wondering anyone else knew about this. I call it people and relationships, point=people and line=relationship There is 1 relationship between every 2 people. Here is the table: # people  # relationship 00 10 21 33 46 510 Take a look at this picture (Click) There is an obvious pattern in the table. See if you spot it. And see if you can find out the whole equation. 
September 6th, 2017, 10:48 AM  #2 
Global Moderator Joined: Dec 2006 Posts: 18,704 Thanks: 1530 
The sum of the numbers in each row is the second number in the next row. Is that what you mean? The "whole equation" for what in terms of what? 
September 6th, 2017, 11:50 AM  #3  
Newbie Joined: Sep 2017 From: Usa Posts: 4 Thanks: 0  Quote:
# people = x # relationship = y Example equation y=4(x)²+5 Last edited by Logix; September 6th, 2017 at 12:22 PM.  
September 6th, 2017, 01:44 PM  #4 
Global Moderator Joined: Dec 2006 Posts: 18,704 Thanks: 1530 
$\displaystyle y = \binom{x}{2}$

September 6th, 2017, 02:02 PM  #5 
Newbie Joined: Sep 2017 From: Usa Posts: 4 Thanks: 0 
Check your equations by substituting the numbers on my table into your equation. Hint: if you graph the table, it would look like a quadratic equation.
Last edited by Logix; September 6th, 2017 at 02:04 PM. 
September 6th, 2017, 02:57 PM  #6 
Global Moderator Joined: Dec 2006 Posts: 18,704 Thanks: 1530 
For example, $\displaystyle \binom52 = 5(4)/2 = 10$.

September 6th, 2017, 03:23 PM  #7 
Newbie Joined: Sep 2017 From: Usa Posts: 4 Thanks: 0  
September 6th, 2017, 04:32 PM  #8 
Math Team Joined: Jul 2013 From: काठमाडौं, नेपाल Posts: 876 Thanks: 60 Math Focus: सामान्य गणित  

Tags 
equation, find, people, relationships 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Proving angle Relationships help  Quesadilla  Geometry  1  November 9th, 2016 05:38 AM 
Any smart people out there? Stuck on proving a difference equation by induction...  Geronimo  Calculus  2  September 12th, 2015 02:31 AM 
Find an optimal order for a positioning a group of people  FrankDo  Applied Math  0  November 6th, 2013 05:35 AM 
on relationships within the power set of Z+  icemanfan  Applied Math  3  March 1st, 2012 03:26 PM 
bigO subset relationships  lamhmh  Applied Math  1  June 24th, 2011 07:10 AM 