Graph: Given X, Find Y

MattF

New Member
Joined
Jul 22, 2009
Messages
1
Hi Everyone,

I have tried to recreate a graph given to me on paper by taking a few points and ploting them in excel. I now want to find a function to return the Y value for a given X in the range of the graph. I have tried using the trend function but the regression line does not come close to the graph I have created.

Is there a way for a function to just "read" the line of the graph, not a regression line, and return a Y value based on a given X?
 

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swat2

Board Regular
Joined
Jul 23, 2009
Messages
173
Is the function a simple line or a polynomial? You can also set the regression options to include some points ( think first or last)
 
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iliace

Well-known Member
Joined
Jan 15, 2008
Messages
3,546
Office Version
  1. 365
  2. 2016
  3. 2010
Platform
  1. Windows
If it's polynomial, LINEST will do any degree polynomial, not just linear. It's described in the help file.
 
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