How do you use the method of linear interpolation to approximate values and create an equation of a line?
1 Answer
Mar 22, 2015
Let's say you have two points:
An equation of the line will be of the form
where
Example :
Let's take
graph{0.5x+3 [-9.61, 12.89, -2.795, 8.455]}
Then first we determine the slope
Difference in
Difference in
To find the slope we divide
We fill this in in one of the points to get
So the equation goes
And you can fill in any
Check (allways check!) with the other point