November 11th, 2012, 01:36 PM  #1 
Newbie Joined: Nov 2012 Posts: 5 Thanks: 0  write as an equation?
The following points are part of a table of values for a function. (0, 2), (1, 4), (2, 10), (3, 2 Represent this function as: a) an equation 
November 11th, 2012, 05:49 PM  #2  
Math Team Joined: Dec 2006 From: Lexington, MA Posts: 3,267 Thanks: 406  Re: write as an equation? Hello, vivalajuicy! Quote:
I don't have the equation yet, but I have a recurrence. [color=beige]. . [/color]  
November 12th, 2012, 01:34 AM  #3 
Math Team Joined: Apr 2010 Posts: 2,770 Thanks: 356  Re: write as an equation?
y = 1+3^x

November 13th, 2012, 07:33 AM  #4  
Math Team Joined: Sep 2007 Posts: 2,409 Thanks: 5  Re: write as an equation? Quote:
d= 2, a+ b+ c+ 2= 4 or a+ b+ c= 2 8a+ 4b+ 2c+ 2= 10 or 8a+ 4b+ 2c= 8, and, dividing by 2, 4a+ 2b+ c= 4. 27a+ 9b+ 3c+ 2= 28 or 27a+ 9b+ 3c= 26 If we subtract a+ b+ c= 2 from 4a+ 2b+ c= 4, we get 3a+ b= 2. If we multiply a+ b+ c= 2 by 3 to get 3a+ 3b+ 3c= 6 and subtract that from 27a+ 9b+ 3c= 26 we get 24a+ 6b= 20 or 12a+ 3b= 10. If we multiply 3a+ b= 2 by 3 we get 9a+ 3b= 6 and subtracting that from 12a+ 3b= 10, 3a= 4 so a= 4/3. Now, you can put that back into 3a+ b= 2 to find b, and put those into one of the original equations to find c. That is a completely different solution from Hoempa's but you have to understand that there can be an infinite number of functions whose graph will go through four given points.  

Tags 
equation, write 
Search tags for this page 
Click on a term to search for related topics.

Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
write equation  MathNewb42  Applied Math  0  March 12th, 2013 06:53 AM 
Write an equation for and solve for x  fish262  Algebra  1  March 13th, 2012 06:10 PM 
how can i write equation  phythagoras1  Applied Math  2  December 24th, 2010 01:54 AM 
Write the equation of the tangent lineby (2,2?2)  rodjav305  Trigonometry  6  July 6th, 2009 03:31 AM 
write an equation  minhson1989  Algebra  1  September 1st, 2007 05:15 PM 