#### getting a y-value from a graph knowing the corresponding x-value

```if you have a graph with three points plotted [(x1,y1),(x2,y2),(x3,y3)],
can excel find y4 if you know the corresponding x4?

--
lsu-i-like
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8/3/2005 10:19:35 PM
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```You could use FORECAST() or TREND() to predict the y-value assuming that
the points can be approximated by a straight line.  You could use
FORECAST() to predict the y-value assuming that the points can be

Jerry

lsu-i-like wrote:

> if you have a graph with three points plotted [(x1,y1),(x2,y2),(x3,y3)],
> can excel find y4 if you know the corresponding x4?

```
 0
8/4/2005 2:43:20 AM

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