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


L

lsu-i-like

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?
 
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J

Jerry W. Lewis

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
approximated by a quadratic.

Jerry
 

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